The bracelet looks very much like a Shackman, produced for Omega.
(As does the one in the old advert)
If you look at the hallmarks/ maker’s name that will confirm it.
If it says DS&S, it’s a Schackman.
This may be good news if you want to go to the trouble of having a bracelet made as the original Schackman tools were bought by STS
See this thread:
https://omegaforums.net/threads/omega-18k-milanese-bracelet-hand-made-using-original-tooling.62275/
However, I don’t know if the bought all of the tools to make the different styles of bracelets or just the Milanese.
Perhaps
@Tom Dick will know?
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