Calibre 12 Prototype
Bundeswehr 1550 SG — Calibre 12 Prototype
Undated
Unproduced automatic prototype on the Calibre 12, recognisable by the crown on the left; a few reached private collections.
No verified image of this watch yet
Identifying details
- Left-hand crown
Winding crown on the left side of the case.
Variants of 1550 SG
Reference overview →| Variant | Production |
|---|---|
| 3H Dial | 1967–? |
| Plain Dial (No 3H) | 1967–? |
| Sternzeit Reguliert | 1967–? |
| Luftforsvaret (Royal Norwegian Air Force) | 1972–1978 |
Case & movement
- Reference
- 1550 SG
- Production
- Undated
- Case material
- Stainless steel
- Case diameter
- 43 mm
- Movement
- Manual winding
- Date
- No
- Caliber
- Heuer Calibre 12
Dial, bezel & hands
- Dial colour
- Black dial, black registers
Unknown attributes are left out rather than guessed.