O-ring case back gasket to fit Omega® case numbers: 563
RL 507-D4 RL 507-D4 Ronda Quartz Powertech Movement is a 3 hand (hour/minute/seconds) Swiss assembled
31 mm x 23
Jaws are polished
yoke spring to fit Jaeger LeCoultre® calibres: 825
Tissot® Crown (Waterproof, threaded), fits tube T358.389, part number for the crown is T350.603 or T350006734 5022 Series Ronda O-ring case back gasket toTissot Crown (Waterproof, threaded), fits tube T358. 389, part number for the crown is T350. 603 or T350006734 Polished steel colour, threaded waterproof crown, genuine with logo, T shaped, slightly domed, diameter 6. 50 mm, fits tube 2. 60 mm (threaded on the inside of the case tube), total height 7. 55 mm, fits stem 1. 20 mm. Will fit Tissot tube T358. 389. Tissot part number for the crown is T350. 603 or T350006734 *Perrin Supply Ltd is independent