Please ensure you read the full. Omega Silver 0.800 Pocket Watch Case 1900, 51.4mm Engraved Repair Parts (623). The case is marked: 1950108. Diameter of the case: 51.4 mm. Diameter of the caseback: 50.08mm. Diameter of the inner front part of the case: 43.38mm. Diameter of the inner back part of the case: 41.13mm. Diameter…