Omega 516 end link stamp information

Hi everyone,

I have these 2 1039/516 bracelets and just noticing the difference in the 516 stamp on the endlinks.

Is this typical? I would expect maybe some variation from 1967 to 1972 and have found a few different looking 516 stamps online, but just checking with the experts.

I can get some better photos if needed in a few days.

Both bracelets came off Speedmasters, which I would say were original to them, but again hard to know 100%

Thanks!

I can't comment on the originality but yes very very typical - I'd say 10% of bracelets have mismatched but unnoticeable endlinks from different runs