I’m afraid to say it not!
A 166.093 has a larger diameter bezel than a 166.091 and is of a completely different design. Even the acrylic insert on a Grand is bigger. For reference this is an original Grand bezel along side an Original NOS 166.091 Tritium bezel and an NOS 166.091 Tritium service bezel.
Well I'll be damned, sure looked like it. Talk about some interesting bezel info. Haven't owned either of them, but always love those vintage divers Omega brought out. Other one on my list is the SHOM.
So was that bezel an option offered at the time or something special made for your watch?
Honestly I don’t know! I’ve not seen another Seamaster 200m with that style of bezel before, so maybe it’s custom made bezel… maybe the owner can shed some light or perhaps someone more knowledgable than me on here, as the great thing with this forum is every days a learning day.
On a side note tho… and as luck would have it… WRUW… well I do like a SHOM! 😉 This one been my 40th birthday present from my wife, sourced by my late brother, so for me a bit of a special watch that gets regular wrist time… as they all should!
