Mark 1 (Earlier Case, Smaller Bezel Teeth)
Autavia 2446C — Mark 1 (Earlier Case, Smaller Bezel Teeth)
1968–?
Black dial with white registers, polished stick hands with lume and a white chronograph seconds hand, in the first compressor case with finer bezel teeth.
Identifying details
- Reverse panda dial
Black or dark dial with white or silver registers.
- Compressor (snap-back) case
EPSA snap-back case whose gaskets tighten as water pressure rises; Heuer added “C” to the reference.
Variants of 2446C
Reference overview →| Variant | Production |
|---|---|
| Mark 1 (Earlier Case, Smaller Bezel Teeth)Current | 1968–? |
| Mark 2 (Second Case, Larger Bezel Teeth) | c. 1970–? |
| SN Silver Dial (Loose Dials Cased Later) | 1968–? |
Case & movement
- Reference
- 2446C
- Production
- 1968–?
- Case serials
- c. 108,000–109,999
- Case material
- Stainless steel
- Crystal
- Plastic
- Movement
- Manual winding
- Date
- No
- Caliber
- Valjoux 72
Dial, bezel & hands
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.