Wow that stuff is old. I'm pretty sure WCC is Winchester Cartridge Company , WRA is Winchester Repeating Arms and RA is Rock Island Arsenal. All of it is 1942 vintage. I wonder if it was sent to Europe during the war and repackaged there.
Well... the can is junk as that can opener was not very kind. The guy thought it was Tokarev ammo and I have a CZ52 I really enjoy shooting so it was worth the gamble especially since it turns out to be 45ACP! I think he might have a couple more cans. Hmmm..may have to go buy all that useless Tokarev ammo