First Execution, Black Dial (N) · Early First Execution, Black Dial, Polygon Back
Carrera 12 2447 — First Execution, Black Dial (N) · Early First Execution, Black Dial, Polygon Back
1963–?
Early black dial in the polygon-back case.
Identifying details
- Polygon caseback
Smooth twelve-sided screw-back (often called a “hexback”) instead of the notched standard back.
Variants of 2447
Reference overview →| Variant | Production |
|---|---|
| First Execution, White Dial (S) | 1963–? |
| First Execution, White Dial (S) · Early First Execution, Eggshell Dial, Standard (Slotted) Back | 1963–? |
| First Execution, White Dial (S) · Early First Execution, Eggshell Dial, Polygon Back | 1963–? |
| First Execution, White Dial (S) · Later First Execution, Silver-White Dial, Polygon Back | 1963–? |
Case & movement
- Reference
- 2447
- Production
- 1963–?
- Case serials
- c. 56,000–57,999Look up Heuer serial numbers
- Case material
- Stainless steel
- Case diameter
- 36 mm
- Crystal
- Plastic
- Movement
- Manual winding
- Date
- No
More specifications (1)
Movement
Valjoux 72
13-ligne hand-wound chronograph with column wheel and horizontal clutch, descended from the 14-ligne Valjoux 22/23. Its 12-hour counter at six set the classic three-register layout. Made 1938–1974 and used by Rolex, Heuer and many others; Rolex fitted it to the pre-Daytona ref. 6234.