Hello Malcolm,

Thanks for your help. I can add a bit more information to the list. I was wondering if I would ever find out what those flat steel wrenches like "A" were used for but now I  have a start. I guess they would have been sent out with other implements as well as a #23 Plow so if anyone out there has anymore info on them I would appreciate it..

I have a mallable Z 435 and on mine the letters are raised. It is eight inches. The small jaw is 3/4 inch and the large jaw one inch.

I'll continue to make a list of M-H wrenches and their associate companies but I'm not going to take on a list of Robinson Modifications Ha Ha!!!!

Alan