Mark 2 (Second Case, Larger Bezel Teeth)
Autavia 2446C — Mark 2 (Second Case, Larger Bezel Teeth)
c. 1970–?
Second compressor case with coarser bezel teeth; the dial gains red accents and black-inserted markers, the hands black inserts, and the chronograph seconds hand turns red.
Heuer catalogue appearances listed by OnTheDash: 70/71.
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) | 1968–? |
| Mark 2 (Second Case, Larger Bezel Teeth)Current | c. 1970–? |
| SN Silver Dial (Loose Dials Cased Later) | 1968–? |
Case & movement
- Reference
- 2446C
- Production
- c. 1970–?
- Case serials
- c. 144,000–145,999
- Case material
- Stainless steel
- Case diameter
- 40.8 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.