Omega 42.9 8D-1321, Balance staff
- OMEGA original balance staff, not in factory packaging.
- Fits cal: 390, 391 (42.9 8D)
Data: Omega 390 (42.9 8D CLEF 15P).1947
- 15 jewels, manual wind
- Size: 42.9 mm.
- H: = -- mm.
- N: = 18.000 A/h.
- Power reserve: 8 Days.
Versions:
- 390: winding on back.
- 391: stem winding.