Rare Oris pocket watch special made for the TCDD (Türkiye Cumhuriyeti Devlet Demiryolları), the Turkish Railways Company.
The movement is a high precision Swiss Made quartz battery operated caliber. AFAIK it’s a Tissot caliber 2030 from 1977.
The case diameter is ca. 47 mm, the back case is engraved with the TCDD logo and a very detailed image of a locomotive.
The watch is working and keeping a precise time.