Lot Provenance & Metallurgical Verification
The Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar 39mm Reference Q1628430 is an authenticated Geneva private vault allocation crafted in 904L Stainless Steel Custom Architecture (39.0 mm x 9.3 mm) weighing 68.5g on a calibrated Mettler-Toledo analytical scale, powered by Jaeger-LeCoultre Manufacture Cal. 925 / Cal. 899 (+0.8 s/d, 303 deg, 28,800 vph, 72-hour power reserve) with a double anti-reflective sapphire crystal and 50m / 5 ATM sealing.
| Lot Entity, Maison & Reference Code | Jaeger-LeCoultre — Master Ultra Thin / Rendez-Vous | Ref. Q1628430 | SKU: VIP-CUST-Q1628430-W304 |
|---|---|
| Precious Metal Assay & Hallmarked Alloy | 904L Stainless Steel Custom Architecture — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| Certified Vault Scale Weight (1:1 Parity) | 68.5g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Gem-Setting & Case Proportions | Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 68.5g 904L Steel Edition • 39.0 mm x 9.3 mm |
| Horological Calibre & Positional Regulation | Jaeger-LeCoultre Manufacture Cal. 925 / Cal. 899 — Swiss Super Clone Mechanical Calibre Regulated to +0.8 s/d, 303 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 • 50m / 5 ATM |
| Dial Provenance & Bracelet Clasp Architecture | 39.0 mm x 9.3 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Vulcanized Elastomer / Alligator Strap & Folding Clasp |
Allocated within our Geneva Private Treaty Jaeger-LeCoultre collector vault, this Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar 39mm Reference Q1628430 is crafted in 904L Stainless Steel Custom Architecture (39.0 mm x 9.3 mm) with a certified reference mass of 68.5g. 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: Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar 39mm — Official Reference Q1628430 (SKU VIP-CUST-Q1628430-W304).
- Vault Metallurgy: 904L Stainless Steel Custom Architecture construction paired with Precision Brushed & Polished CNC Edition Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal and Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands.
- Authenticated Mass: 68.5g verified on a calibrated Mettler-Toledo analytical balance in 4K video.
- Movement Architecture: Jaeger-LeCoultre Manufacture Cal. 925 / Cal. 899 running at 28,800 vph (4 Hz) with 72-hour power reserve (+0.8 s/d, 303 deg).
- Crystal & Security: Double anti-reflective sapphire crystal, 50m / 5 ATM water resistance, and confidential escrow settlement.
Within the same Jaeger-LeCoultre horological silo, collectors also compare the Jaeger-LeCoultre Master Ultra Thin Small Seconds 39mm Cal. 896 Ref. Q1358420 (68.6g) and the Jaeger-LeCoultre Master Ultra Thin Moonphase 39mm Free-Sprung Cal. 925 Ref. Q1368430 (68.5g).
How do I initiate a Private Treaty acquisition for Jaeger-LeCoultre Ref. Q1628430?
Select your wrist circumference and request an allocation via our Geneva Private Client Desk (+1 305 724 0661) referencing SKU VIP-CUST-Q1628430-W304. 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 Jaeger-LeCoultre Ref. Q1628430?
This reference weighs 68.5g in 904L Stainless Steel Custom Architecture and is powered by the Jaeger-LeCoultre Manufacture Cal. 925 / Cal. 899 beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.8 s/d, 303 deg).
Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar 39mm Ref. Q1628430 — Private Vault Edition
Geneva Private Treaty Vault • 68.5g 904L Stainless Steel Custom Architecture • Jaeger-LeCoultre Manufacture Cal. 925 / Cal. 899