5402BC (white gold)
Royal Oak Jumbo 5402 — 5402BC (white gold)
1977–c. 1991
Officially introduced in 1977. The dial usually has 11 diamond markers on round or square white-gold settings; with a gem-set dial the baton hands carry no tritium. No. 88 (case B23005, sold in Germany in 1979) has a black Tapisserie dial with diamonds.
150 sold (1 in 1972, then 1977–1991, mostly 1978–1980), 10 of them converted to the 4187BC.
Identifying details
Variants of 5402
Reference overview →| Variant | Production |
|---|---|
| 5402ST A-Series | 1972–c. 1976 |
| 5402ST A-Series · Steel bezel screws (earliest examples) | c. 1972 |
| 5402ST without small number (Intermediate series) | 1974–c. 1976 |
| 5402ST B-Series | 1975–c. 1977 |
Case & movement
- Reference
- 5402
- Production
- 1977–c. 1991
- Case serials
- c. 1–151
- Case material
- 18k white gold
- Case diameter
- 39 mm
- Water resistance
- 100 m
- Crystal
- Sapphire
- Movement
- Automatic
More specifications (2)
- Date
Movement
Audemars Piguet 2121
Date version of the 2120, introduced in October 1970 in model 5381 and chosen for the first Royal Oak in 1972; at the time the thinnest automatic with central rotor and date. Ébauche from LeCoultre & Cie until about 2002, then made by AP; replaced by the 7121 in 2022.
Automatic · Introduced 1970 · 19,800 vph · 36 jewels · 40 h reserve · Ø 28 mm · 3.05 mm thick