First post here...help requested to identify..

Hola everyone!! I always bought my classic Omegas from the same jeweller/watch repair shop in CDMX and he always showed me what was changed/repaired, etc... until he retired :-(
I bought this piece from him 20 years ago and cannot remember what he told me...it seems to me case and crown are pretty new and maybe the dial has been repainted...Diameter 28mm. Any help to identify the original model is appreciated. Saludos from Spain. Diego

Probably a 26.5 SOB T2 or T3 caliber inside. I confirm that the dial was repainted. Case serial number dates it from 1943-44.