Lot Provenance & Metallurgical Verification
The Hublot Square Bang Unico Chronograph 42mm 18K King Gold Reference 821.OX.0180.RX is an authenticated Geneva private vault allocation crafted in 18K Rose Gold Au750 (42.0 mm x 14.5 mm) weighing 120.8g on a calibrated Mettler-Toledo analytical scale, powered by Hublot Unico Flyback Chronograph Cal. HUB1280 (+0.8 s/d, 298 deg, 28,800 vph, 72-hour power reserve) with a double anti-reflective sapphire crystal and 100m / 10 ATM sealing.
| Lot Entity, Maison & Reference Code | Hublot — Big Bang / Square Bang Unico | Ref. 821.OX.0180.RX | SKU: VIP-AU750-821.OX.0180.RX-W479 |
|---|---|
| Precious Metal Assay & Hallmarked Alloy | 18K Rose Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| Certified Vault Scale Weight (1:1 Parity) | 120.8g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Gem-Setting & Case Proportions | Hand-Finished 18K Rose Gold Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 120.8g 18K Rose Gold • 42.0 mm x 14.5 mm |
| Horological Calibre & Positional Regulation | Hublot Unico Flyback Chronograph Cal. HUB1280 — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 298 deg |
| Power Reserve Autonomy & Beat Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| Sapphire Crystal Optics (Double AR) & Hermeticity | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 10 ATM |
| Dial Provenance & Bracelet Clasp Architecture | 42.0 mm x 14.5 mm • Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K Rose Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |
Allocated within our Geneva Private Treaty Hublot collector vault, this Hublot Square Bang Unico Chronograph 42mm 18K King Gold Reference 821.OX.0180.RX is crafted in 18K Rose Gold Au750 (42.0 mm x 14.5 mm) with a certified reference mass of 120.8g. Every private treaty allocation undergoes Fischer XRF Au750 purity and Mettler-Toledo gravimetric grading prior to insured armored dispatch.
5 Core Private Vault Allocation Specifications:
- Private Vault Reference: Hublot Square Bang Unico Chronograph 42mm 18K King Gold — Official Reference 821.OX.0180.RX (SKU VIP-AU750-821.OX.0180.RX-W479).
- Vault Metallurgy: 18K Rose Gold Au750 construction paired with Hand-Finished 18K Rose Gold Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal and Hand-Finished Collector Dial with Solid 18K Gold Applied Hour Markers & Hands.
- Authenticated Mass: 120.8g verified on a calibrated Mettler-Toledo analytical balance in 4K video.
- Movement Architecture: Hublot Unico Flyback Chronograph Cal. HUB1280 running at 28,800 vph (4 Hz) with 72-hour power reserve (+0.8 s/d, 298 deg).
- Crystal & Security: Double anti-reflective sapphire crystal, 100m / 10 ATM water resistance, and confidential escrow settlement.
Within the same Hublot horological silo, collectors also compare the Hublot Big Bang Unico Flyback Chronograph 42mm Ref. 441.NX.1171.RX (120.2g) and the Hublot Big Bang Ferrari Unico Flyback Chronograph 45mm Ref. 401.NX.0123.VR (120.5g).
How do I initiate a Private Treaty acquisition for Hublot Ref. 821.OX.0180.RX?
Select your wrist circumference and request an allocation via our Geneva Private Client Desk (+1 305 724 0661) referencing SKU VIP-AU750-821.OX.0180.RX-W479. A dedicated vault director will transmit your live 4K scale, XRF, and timegrapher dossier.
What settlement methods are supported for Private Vault allocations?
18K VIP facilitates confidential private client settlement via International Bank Wire (SWIFT / SEPA), Private Escrow, and Direct Digital Asset Settlement (USDT, USDC, BTC, ETH) with insured courier delivery.
What is the verified weight and calibre specification of this Hublot Ref. 821.OX.0180.RX?
This reference weighs 120.8g in 18K Rose Gold Au750 and is powered by the Hublot Unico Flyback Chronograph Cal. HUB1280 beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.8 s/d, 298 deg).
Hublot Square Bang Unico Chronograph 42mm 18K King Gold Ref. 821.OX.0180.RX — Private Vault Edition
Geneva Private Treaty Vault • 120.8g 18K Rose Gold Au750 • Hublot Unico Flyback Chronograph Cal. HUB1280