Custom Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Ref. 15407ST.OO.1220ST.01
5-Axis Swiss CNC 904L Stainless Steel Custom Architecture • 162.3g Verified Mass • Regulated Audemars Piguet Cal. 3132 Dual-Balance Openworked
Our Geneva workbench mills solid Au750 and Pt950 monobloc cases, slices authentic Widmanstätten meteorite dials, and hand-sets graduated baguette sapphires to exact 1:1 reference mass.
5-axis CNC monobloc cases and bracelets engineered to exact original reference gram mass.
Acid-etched Gibeon iron meteorite, natural stone slices, and hand-beveled openworked bridges.
Personal 4K bench video showing your watch on a Mettler-Toledo scale and Fischer XRF analyser.
Direct non-custodial crypto invoice in USDT, BTC, ETH, or USDC with insured express delivery.
5-Axis Swiss CNC 904L Stainless Steel Custom Architecture • 162.3g Verified Mass • Regulated Audemars Piguet Cal. 3132 Dual-Balance Openworked
5-Axis Swiss CNC 18K Rose Gold Au750 • 160.8g Verified Mass • Regulated Rolex Manufacture Cal. 4131 - 72h Power Reserve
5-Axis Swiss CNC 18K White Gold Au750 • 170.2g Verified Mass • Regulated Rolex Manufacture Cal. 3235 - 70h Power Reserve
5-Axis Swiss CNC 904L Stainless Steel Custom Architecture • 116.3g Verified Mass • Regulated Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor
5-Axis Swiss CNC 18K White Gold Au750 • 216.7g Verified Mass • Regulated Rolex Manufacture Cal. 4131 - 72h Power Reserve
5-Axis Swiss CNC 950 Platinum Pt950 • 73.7g Verified Mass • Regulated Cartier Manufacture Hand-Wound Cal. 8970 MC
5-Axis Swiss CNC Crystalline Sapphire & Grade 5 Titanium • 78.3g Verified Mass • Regulated Richard Mille Hand-Wound Tourbillon Calibre
5-Axis Swiss CNC Carbon TPT & Grade 5 Titanium • 66.9g Verified Mass • Regulated Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton
5-Axis Swiss CNC Carbon TPT & Grade 5 Titanium • 50.9g Verified Mass • Regulated Richard Mille Cal. RMUL3 Grade 5 Titanium Skeleton
5-Axis Swiss CNC Carbon TPT & Grade 5 Titanium • 55.6g Verified Mass • Regulated Richard Mille Cal. RMUL2 Free-Sprung Skeleton
5-Axis Swiss CNC Carbon TPT & Grade 5 Titanium • 50.2g Verified Mass • Regulated Richard Mille Cal. RMAL1 Variable-Geometry Rotor
5-Axis Swiss CNC 904L Stainless Steel Custom Architecture • 162.0g Verified Mass • Regulated Audemars Piguet Cal. 3132 Dual-Balance Openworked
Every timepiece across our 774-watch register is precision-engineered to match 1:1 Geneva reference weights on a calibrated Mettler-Toledo 0.01g balance and verified via Fischer XRF Au750 spectroscopy and 6-position Witschi Chronoscope testing.
| Horological Maison | Flagship Reference Archetypes | Precious Metal Fineness | Verified Mass Range | Benchmark Calibres | Category Hub |
|---|---|---|---|---|---|
| Rolex Geneva | Daytona 116508/126508, Day-Date 228238/228235, Submariner 126618 | Solid 18K Au750 & Pt950 | 158.8g – 282.4g | Cal. 4130, 4131, 3255, 9001 | Rolex Register → |
| Patek Philippe | Nautilus 5711/1R, 5712/1R, 5980/1R, Aquanaut 5167R, 5711/113P | Solid 18K Rose/White & Pt950 | 106.0g – 244.8g | Cal. 26-330 S C, 240 PS, CH 28-520 | Patek Register → |
| Audemars Piguet | Royal Oak 15500OR, Openworked 15407OR, Chronograph 26240OR | Solid 18K Pink/White Gold | 174.6g – 238.0g | Cal. 4302, 3132, 4401 Flyback | AP Register → |
| Richard Mille | RM 52-05 Tourbillon, RM 56 Sapphire, RM 055 / RM 35-02 18K Gold | Solid 18K Red Gold, Sapphire, NTPT | 68.5g – 164.0g | Cal. RMUL2, RMAL1, Tourbillon | RM Register → |
| Vacheron Constantin | Overseas 4500V/110R, Chronograph 5500V/110R, Perpetual Ultra-Thin | Solid 18K 5N Pink Gold (Au750) | 178.0g – 232.0g | Cal. 5100, Cal. 5200, Cal. 1120 QP | VC Register → |
| Cartier Paris | Santos Large WGSA0007/0019, Santos Skeleton, London Crash, Ballon Bleu | Solid 18K Yellow & Rose Gold | 64.5g – 194.5g | Cal. 1847 MC, 9629 MC, 8970 MC | Cartier Register → |