Omega 620-1106, Winding stem
- OMEGA original part, not in original packaging.
- Thread: 0.90 MM.
- Fits cal: 620, 630, 670, 671, 680, 681, 682, 683, 684, 685
Versions:
- 620: N: 19800.
- 630: N: 19800, center second.
Versions:
