Audemars Piguet
Royal Oak Selfwinding "Ruthenium" Dial
Audemars Piguet
15450ST.OO.1256ST.02
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Details & Specifications
Description
The Audemars Piguet Royal Oak Selfwinding ref. 15450ST.OO.1256ST.02 is the mid-size 37mm expression of Gérald Genta's 1972 masterpiece, presented here in one of the most sophisticated and visually commanding dial configurations available in the current Royal Oak range. The ruthenium-toned "Grande Tapisserie" dial is a study in restrained drama — the larger hobnail guilloché pattern, executed in a deep, dark grey-black metallic tone that shifts from near-black to a cool anthracite depending on the quality and angle of light, lending the watch a seriousness and depth that the more common blue and grey dial variants cannot match
. Against this backdrop, the applied white gold hour markers and Royal Oak hands with luminescent coating create a high-contrast, instrument-quality legibility that is entirely consistent with the Royal Oak's dual identity as both a dress watch and a precision timepiece. The 37mm stainless steel case is finished to Audemars Piguet's exacting standard: satin-brushed surfaces in deliberate contrast with mirror-polished chamfers, the octagonal bezel secured by eight white gold hexagonal screws — the most recognised detail in contemporary watchmaking, as immediately legible at a distance as any logo.
The date window sits discreetly at 3 o'clock. Through the glareproofed sapphire exhibition case back, the Calibre 3120 — a 40-jewel, 280-part manufacture automatic movement operating at 21,600 vph with a 60-hour power reserve — is fully visible, its beautifully decorated bridges and côtes de Genève finishing a reminder that the Royal Oak's substance is as exceptional as its style. The fully integrated stainless steel bracelet, with alternating brushed and mirror-polished links, flows seamlessly from the case with AP's characteristic suppleness, secured by a double folding deployant clasp.
Specifications:
| Movement | |
| Type | Automatic Self-Winding (Manufacture) |
| Calibre | AP Calibre 3120 |
| Functions | Hours, Minutes, Centre Seconds, Date |
| Frequency | 21,600 vph (3 Hz) |
| Power Reserve | Approx. 60 hours |
| Jewels | 40 |
| Parts | 280 |
| Case | |
| Case Material | Stainless Steel — brushed and mirror-polished finish |
| Case Diameter | 37.0 mm |
| Case Thickness | 9.8 mm |
| Water Resistance | 50m / 165ft |
| Bezel | Stainless steel octagonal bezel with 8 white gold hexagonal screws |
| Crystal | Glareproofed sapphire crystal; glareproofed sapphire exhibition case back |
| Dial | Ruthenium-toned "Grande Tapisserie" hobnail guilloché dial; applied white gold hour markers and Royal Oak hands with luminescent coating; date at 3 o'clock |
| Bracelet | |
| Material | Integrated stainless steel bracelet with alternating brushed and mirror-polished links |
| Clasp | AP double folding deployant clasp |
| Additional Details | |
| Reference | 15450ST.OO.1256ST.02 |
| Collection | Royal Oak Selfwinding — Mid-Size 37mm |
| Origin | Swiss Made |

