25721SN (blackened steel test piece)
Royal Oak Offshore The Beast 25721 — 25721SN (blackened steel test piece)
c. 1998
Only trace of an “SN” 25721: probably worn by a watchmaker to test the black coating before the End of Days 25770SN. In AP’s museum from 2000, stolen ten years later.
10,896 delivered 1993–2016 (7,308 ST, 2,914 TI, 589 BA, 64 SA, 21 BC, 10 PT, 1 SR, 1 SN); first deliveries 25 November 1993, 61 that year. Calibre 2126/2840, later 2226/2840 and 2326/2840.
Identifying details
- Unique piece
Documented as the only example made (e.g. marked “1/1”).
- Octagonal bezel
Eight-sided bezel around a round dial opening.
- Chronograph
Variants of 25721
Reference overview →| Variant | Production |
|---|---|
| 25721ST | 1993–2016 |
| 25721ST · First 100: Royal Oak caseback | 1993 |
| 25721ST · D-series dial | 1993–1999 |
| 25721ST · E-series dial | 1993–1999 |
Case & movement
- Reference
- 25721
- Production
- c. 1998
- Case material
- Stainless steel
- Case diameter
- 42 mm
- Water resistance
- 100 m
- Crystal
- Sapphire
- Movement
- Automatic
- Date
- Yes
More specifications (1)
- Caliber
Movement
Audemars Piguet 2226/2840
Evolution of the 2126/2840 on the 28,800 vph 2226 base (still a Jaeger-LeCoultre ébauche) with the Dubois Dépraz 2840 module; replaced from 2003 by AP’s own 3126 base.
Automatic · Introduced 1997 · 28,800 vph