Standard
Classic (non-Royal Oak) 5548 — Standard
1978–?
Day, date, month and moon phase without a leap-year display; the Stern dial base was later reused for the Royal Oak 25554.
159 ordered by managing director Georges Golay before launch; more than 2,000 made; produced for some 14 years.
Identifying details
- Perpetual calendar
Calendar that accounts for month lengths and leap years.
- Moon phase
.
Variants of 5548
Reference overview →| Variant | Production |
|---|---|
| StandardCurrent | 1978–? |
Case & movement
- Reference
- 5548
- Production
- 1978–?
- Movement
- Automatic
- Date
- Yes
- Caliber
- Audemars Piguet 2120/2800
Dial, bezel & hands
Unknown attributes are left out rather than guessed.
Movement
Audemars Piguet 2120/2800
Perpetual calendar (day, date, month, moon phase, no leap-year display) formed by the 2120 base and the 2800 under-dial module made by Dubois Dépraz; the thinnest automatic perpetual calendar of its time. First used in model 5548 (1978), in the Royal Oak from 1984. An openworked 2120/2800SQ followed in 1982.