The last remaining job I had to do on the Tudor Oyster (7934)was replace the broken bezel. In searching the web I came across Tudor Prince 34mm bezels for twenty bucks . The inner and outer diameters were spot on so I bought one.
Alas the underside is flat whereas on mine it has a step ,see photo.
It’s not worth the money looking for NOS and am Wondering if there are alternative cases with the same bezel or is there a way to grind in the step.
Outer 33.2 ,inner 29 ,h 2.