Antique 40mm Omega 17 Jewel Mechanical Pocket Watch Movement 37.5T 17P Swiss. Item: Pocket Watch Movement Brand: Omega Movement: Mechanical Country: Swiss Jewels: 17 Jewel Gender: Men's Caliber: 37.5T 17P Size: 40mm. Ok, overall condition for its age. Running but it will need repaired. This means, it can run unreliably, start or stop and timekeeping is not guaranteed. The dial has scratches and discoloration. It is missing the stem.