Planter plates identification

[truckerbatty]

I need help identifying the brand of a few planter plates and parts. I have a few plates with a casting or part number that starts with a P. One plate has a P 973 on it. I have another set of plates that look different and have a part or casting number of 467M. The final part is a cast cover with number of A166 on it. I can"t find any other casting marks that identify the manufacturer. Anyone know what these are from? I have pictures, but don"t know how to get them on this posting.

 

[Nebraska Cowman]

Photobucket is you friend. set up an acct , it's free, and you can upload the pics there and share them anywhere. I use it too for a backup in case I ever loose my computer.
go here

 

[truckerbatty]

Here are some pictures. The first is of the plates with a P. The second is the plate that ends in M and the third is off the cover.