Massey Harris

Model 12 Orchard OPA

......................200000

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 20 RC

1946 .....................1001
1947 .....................1580
1948 .....................3584

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 20 Standard

1946 .....................1001
1947 .....................1002
1948 .....................2230

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 20K RC

1947 .....................1001
1948 .....................1354

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 20K Standard

1947 .....................1001
1948 .....................1819

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 21-Colt

1952 .....................1001
1953 .....................1417

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 22 RC

1948 .....................1001
1949 .....................2096
1950 .....................4580
1951 .....................7624
1952 ....................20046
1953 ....................20585

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 22 Standard

1948 .....................1001
1949 .....................1542
1950 .....................3208
1951 .....................4532
1952 .....................5717
1952 ....................20046
1953 ....................20585

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 22K RC

1948 .....................1001
1949 .....................1154
1950 .....................1336
1951 .....................1558
1952 .....................1776
1952 ....................20046
1953 ....................20585

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 22K Standard

1948 .....................1001
1949 .....................1317
1950 .....................1488
1951 .....................1570
1952 .....................1748
1952 ....................20046
1953 ....................20585

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 23 - Mustang

1952 .....................1001
1953 .....................1666
1954 .....................4346
1955 .....................4553
1956 .....................4773

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 25

1932-35 .................69001
1936 ....................69970
1937 ....................71045
1938 A Gears ............73112
1938 B Gears ............85001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 25 Industrial

1937 ....................90001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 30 RC

1946 .....................1001
1947 .....................1002
1948 .....................3386
1949 .....................6825
1950 .....................9345
1951 ....................13816
1952 ....................17934
1952 ....................30001
1953 ....................30596

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 30 Standard

1946 .....................1001
1947 .....................1002
1948 .....................2120
1949 .....................3194
1950 .....................5567
1951 .....................7491
1952 .....................8696
1952 ....................30001
1953 ....................30596

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 30K RC

1947 .....................1001
1948 .....................1225
1949 .....................2010
1950 .....................2393
1951 .....................2731
1952 ....................30001
1953 ....................30596

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 30K Standard

1947 .....................1001
1948 .....................1894
1949 .....................3251
1950 .....................3531
1951 .....................3861
1952 ....................30001
1953 ....................30596

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 33

1952 .....................1001
1953 .....................2055
1954 .....................6617
1955 .....................9782

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 RC

1946 .....................1001
1947 .....................1002
1948 .....................2048
1949 .....................5318
1950 ....................13822
1951 ....................21815
1952 ....................31275
1953 ....................43700
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 Standard

1946 .....................1001
1947 .....................1141
1948 .....................1871
1949 .....................4528
1950 .....................9581
1951 ....................13726
1952 ....................17059
1953 ....................43700
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44D Orchard

1950 .....................1001
1951 .....................1002

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44D RC

1949 .....................1001
1950 .....................1004
1951 .....................2483
1952 .....................4704
1952 ....................40001
1953 ....................43700
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44D Standard

1948 .....................1001
1949 .....................1023
1950 .....................2180
1951 .....................3989
1952 .....................5639
1953 ....................43700
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 GRA -Hi Alt RC

1951 .....................1001
1952 .....................1164

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 GSA -Hi Alt Std

1951 .....................1001
1952 .....................1055

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 - Orchard

1950 .....................1001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 - Special G and D

1953 ....................50001
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 - Vineyard

1950 ......................101
1951 .....................1031
1952 ....................40001
1953 ....................43700

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44K RC

1947 .....................1001
1948 .....................1079
1949 .....................1856
1950 .....................2599
1951 .....................3329
1952 ....................40001
1953 ....................43700
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44K Standard

1946 .....................1001
1947 .....................1011
1948 .....................1441
1949 .....................3598
1950 .....................4827
1951 .....................6019
1952 .....................6787
195240001 ....................
1953 ....................43700
1954 ....................51364
1955 ....................58067

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 - LP RC

1952 .....................1001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44 - LP Standard

1952 .....................1001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44-6 RC

1946 .....................1001
1947 .....................1002
1949 .....................4755
1950 .....................5255
1951 .....................5509

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44-6

RC ........................1948

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 44-6 Standard

1947 .....................1001
1948 .....................2001
1950 .....................2601

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55

1946 .....................1001
1947 .....................1116
1948 .....................2132
1949 .....................3581
1950 .....................5468
1951 .....................6399
1952 ....................10001
1953 ....................13017
1954 ....................15299
1955 ....................17059

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55D Standard

1949 .....................1001
1950 .....................1022
1951 .....................2058
1952 .....................2822
1953 ....................10001
1954 ....................13017
1954 ....................15299
1955 ....................17059

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55D - Riceland and Hillside

1950 .....................1001
1951 .....................1152
1952 .....................1452
1952 .....................1001
1953 ....................13017
1954 ....................15299
1955 ....................17059

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55 DISH - DSW Dsl Western

1951 .....................1001
1952 .....................1190
1952 ....................10001
1953 ....................13017
1954 ....................15299

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55 - GISH Gas Western-GSW

1951 .....................1002
1952 .....................1083
1952 ....................10001
1953 ....................13017
1954 ....................15299

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55-GSA, GSWA, GSHA Hi Altitude

1951 .....................1001
1952 GSWA ................1025
1952 ....................10001
1953 ....................13017
1954 ....................15299

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55-GSH and GIWH Riceland and Hillside

1949 .....................1001
1950 .....................1035
1951 .....................1216
1952 ....................10001
1953 ....................13017
1954 ....................15299
1955 ....................17059

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55K Standard

1946 .....................1001
1947 .....................1013
1948 .....................1554
1949 .....................3033
1950 .....................4078
1951 .....................4808
1952 .....................5503
1952 ....................10001
1953 ....................13017
1954 ....................15299
1955 ....................17059

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 55K Standard - Riceland and Hillside

1949 .....................1001
1950 .....................1013
1951 .....................1110
1952 ....................10001
1953 ....................13017
1954 ....................15299
1955 ....................17059
1956 ....................20001
1957 ....................22649

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 81 RC

1941 ...................400001
1942 ...................403168
1944 ...................403354
1945 ...................403364
1946 ...................404664

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 81 Standard

1941 ...................425001
1942 ...................425678
1944 ...................425757
1945 ...................425780
1946 ...................426803

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 82 RC

1941 ...................420001
1942 ...................420055
1945 ...................420274

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 82 RC

1946 ...................420307

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 82 Standard

1941 ...................435001
1942 ...................435279
1943 ...................435452
1945 ...................435458
1946 ...................435738

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 101 Jr. RC

1939 ...................375001
1940 ...................376158
1941 ...................395570
1942 ...................397637
1943 ...................398596
1944 ...................500003
1945 ...................502434
1946 ...................503779

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 101 Jr. Standard

1939 ...................377001
1940 ...................377928
1941 ...................379550
1942 ...................379815
1943 ...................379855
1944 ...................380641
1945 ...................382569
1946 ...................384298

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 101 Sr. RC

1938 ...................255001
1939 ...................256085
1940 ...................257281
1941 ...................258769
1942 ...................259762
1943 ...................260430
1944 ...................260796
1945 ...................263020
1946 ...................270145

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 101 Sr. Standard

1938 ...................355001
1939 ...................355603
1940 ...................356792
1941 ...................358188
1942 ...................358869
1943 ...................358975
1944 ...................359457
1946 ...................362520

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 101

Sr. Standard ..............1945

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 102 Jr. RC

1939 ...................387001
1940 ...................387031
1941 ...................387127
1942 ...................387419
1943 ...................387601
1944 ...................387844
1945 ...................388240
1946 ...................388995

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 102 Jr. Standard

1939 ...................385001
1940 ...................385204
1941 ...................385204
1942 ...................386099
1943 ...................386662
1944 ...................390008
1945 ...................390994
1946 ...................391913

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 102 Sr. RC

1942 ...................265001
1943 ...................265044
1944 ...................265078

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 102 Sr. Standard

1941 ...................365001
1942 ...................365202
1943 ...................366062
1944 ...................380641
1945 ...................367353

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 201

1940 ....................91201
1941 ....................91541
1942 ....................91691
1943 ....................98674
1944 ....................98807
1946 ....................99689
1947 ...................100120

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 201 Diesel

1940 ....................99501

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 202

1940 ....................95001
1941 ....................95002
1942 ....................95182

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 203

1944 ....................95223
1946 ....................95295
1947 ....................95338

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 203 Diesel

1940 ....................98001
1941 ....................98028
1942 ....................98364
1943 ....................98674
1944 ....................98807
1946 ....................99689
1947 ...................100120

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 303 Industrial

1956 .....................1001
1957 .....................1076
1958 .....................1194

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 333

1956 ....................20001
1957 ....................22649

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 404 Industrial

1956 .....................1001
1957 .....................1051

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 444

1956 ....................70001
1957 ....................73989
1958 ....................77000

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 555

1955 ....................20001
1956 ....................20133
1957 ....................21133
1958 ....................22950

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model 744 Great Britain

1948 ......................201
1949 ......................401
1950 .....................1401

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Challenger

1936-37 ................130001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Challenger Distillate

1936 ...................140001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Challenger Twin Power Gas

1938 ...................133367

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model GP 4WD

1930-35 ................300001
1936-38 ................303001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model I-162

1953 .....................1001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model FSI-244 -USAFw/PTO

1955 .....................2001
1956 .....................2219

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model I-244 -No PTO

1955 Navy ................1001
1956 Navy ................1020
1956 USAF ................3001
1957 USAF ................3181

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model I-330 -Navy

1954 .....................1001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model MH-50

1955 ...................500001
1956 ...................500473
1957 ...................510764

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker

1936-37 ................107001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker Distillate

1936 ...................120001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker Distillate OPA

1936 ...................204001

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker Distillate VPA

1936 ...................201501

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker Twin Power Gas

1938 ...................109838

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker Twin Power OPA Gas

1938 ...................200403

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacemaker Twin Power VPA Gas

1938 .........201042 ?? 201402

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pacer - 16

1954 ....................50001
1955 ....................51613
1956 ....................52771

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.

Model Pony - 11 and 14

1947 .................PGS 1001
1948 .................PGS 1321
1949 .................PGS 1571
1950 ................PGA 10817
1951 ................PGA 13726
1952 ................PGA 18225
1953 ................PGA 22007
1954 ....................22669

SN Location: stamped on a plate on the left side of the main frame (or, on some models, on the right side). It is also stamped on the top center of the transmission housing.