CERTINA cal: 25-011 to 28-451
Base caliber ETA 21.600 A/h.
- 25-011: automatic wind, sweep second, date, base: ETA 2783
- 25-02: manual wind, sweep second, base: ETA 2750
- 25-021: manual wind, sweep second, date, base: ETA 2752
Certina calibers:
- 25-35: manual wind, sweep second, 18.000 A/h.
- 25-36: manual wind, sweep second, 19.800 A/h.
- 25-45: 11.5''' automatic wind, sweep second, 18.000 A/h.
- 25-451: 11.5''' automatic wind, sweep second, date, 18.000 A/h.
- 28-45: 12.5''' automatic wind, sweep second, 18.000 A/h.
- 28-451: 12.5''' automatic wind, sweep second, date, 18.000 A/h.
