105.012-66
Speedmaster Moonwatch 105.012 — 105.012-66
Undated
Single-step caseback. Cased by two makers, Huguenin Frères (HF) and La Centrale Boîtes (CB). A telemeter bezel in kilometres is occasionally found.
Identifying details
Variants of 105.012
Reference overview →| Variant | Production |
|---|---|
| 105.012-63 | Undated |
| 105.012-63 · 105.012, Automovil Club Peruano (ACP) | Undated |
| 105.012-64 | Undated |
| 105.012-65 | Undated |
Case & movement
- Reference
- 105.012
- Production
- Undated
- Movement serials
- c. 24.53M–25.45MLook up Omega serial numbers
- Case material
- Stainless steel
- Case diameter
- 42 mm
- Crown
- 7 mm
- Movement
- Manual winding
- Caliber
- Omega 321
Movement
Omega 321
Hand-wound column-wheel chronograph of Lemania origin (Lemania 27 CHRO C12 / 2310 family), used by Omega from 1946 to 1968 and in every Speedmaster up to the 145.012. Early examples have a symmetrical clutch bridge; later ones an asymmetrical bridge.
Manual winding · Introduced 1946 · 18,000 vph · 17 jewels · Ø 27 mm