AC Plow jointers?

[valleyview]

I've got 3 plow jointers. The castings start with HTP. Anyone know if these are AC or not. Fairly decent size jointers so probably for a 14 or 16 inch bottom type plow. Nice jointers though. If anyone can confirm their identity let me know.

 

[Anonymous-0]

Yes, they are A-C numbers. HTP was LaCrosse Works' prefix for parts that were originally used on the "Heavy Tractor Plow", or something similar. Other common prefixes were LTP for Light Tractor Plow, TDH for Tractor Disc Harrow, and LX for generic LaCrosse Plow works (later became A-C) parts.