Farmall Cub

I have two single bottom fast hitch plows. One has IH520250R1CUB on the beam and the other has IH520260R21CUB. The 50R1 is a Plow Chief Bottom and the 60R21 is a Super Chief Bottom. Was the beam number different for the Chief vs. Super Chief or is it a different beam itself?

520250R1 is a lister part. You must have misread that one.

Yep. You are exactly correct. Just had to get rid of a little more dirt and rust.... Thanks.