Omega 630-1219 cannon pinion (model with height 2.15mm)
Same part for all Omega following calibers : 630 670 671 672
Chaussée - Cannon pinion height 2.15mm (be aware it exists also 3 other models for these calibers, with height 2.40mm , 2.65mm and 2.90mm)
This one is the model 630-1219 with height 2.15 mm
Pre-owned / Pre-used