[Moderator Omega - Wristscan]
An Ω ref 3635 Marine . . .
. . . finally on my wrist and ready for action.
1942 production or thereabouts; possibly issued to the French market, but not necessarily. The Marine was the 'waterproof' watch in Omega's line-up, powered by a T17 shaped movement.
Long fond of this dial incarnation since first spotting one at Omegamania twelve years ago. (Has it been that long?)
[image credit: Antiquorum]
There are obvious dial issues with mine, as well as not-so-obvious movement issues (the detent screw and lever were compromised and had to be replaced), but on the whole glad to source this one for half the hammer of the Omegamania example, including bespoke goat strap, buckle (signed Omega), and servicing.