First execution
- Hour markers
- Flat, thin applied polished steel markers
- Hands
- Thin polished steel hands with luminous inserts
- Caseback
- Screw-back with six slots, excluding very early models with the so-called poly caseback
- Carrera 45 Dato
- Date window at 12 o’clock with red text
- Carrera 12 Dato
- Dato 12 case with ‘fat’ lugs; no Carrera text on the dial; black date pointer
