Recently got two different MAC CL wrenches in 13/16 & 7/8. 13/16 has code F4, but that looks like it could be a couple of different years, and the 7/8 has no codes. I’d like to get more of the 13/16 style, maybe find a catalog from the whatever year it’s from
We have a MAC thread in which dating is discussed. You can find a link in the A-Z Index in the Sticky at the top of the forum titled READ B4 POSTING! Vintage MAC catalogs can be found on Internet Archive.