33 cracked brake drum

[Doctor's Ford]

DavidG asked how the rear brakes are set on my car. I removed the wheel again and took these photos to show the drum separated from the hub and studs components. Today I had the opportunity to ask questions to a guy who used to work at the shop where my car started restoration about 5 years ago and he remembers that the mechanic in charge replaced one of my original rear drums with "a different year style" because he had problems getting studs to work. In photo # 3 you can see the plate where the studs are attached has been machined. It appears then that my cracked drum has the hub separated because is a different year and not a 33-34. May be is not even a Ford?