Perpetual Calendar Retrograde Date Openface 41MM Platinum 270TH Anniversary Limited Edition

REGAL 950 PLATINUM CHASSIS ARCHITECTURED WITHIN A HISTORIC 370-PIECE OPENFACE BLUEPRINT

This ultra-rare limited edition projects absolute mechanical dominance through its refined 41mm structural framework, achieving a perfectly proportioned thickness profile of 10.94 millimeters to sit comfortably as an elite dress complication timekeeper. The entire multi-layered case body, slender bezel, and historic stepped lugs are masterfully sculpted from solid 950 Platinum—the rarest and most prestigious metal in haute horlogerie, selected for its hefty weight and deep, majestic white metallic luster.

Honoring nearly three centuries of undisputed watchmaking authority, the architectural layout perfectly preserves the purest classic styling codes of the collection, detailed with distinctive stepped geometry and a fluted caseback track. Certified with the historic Poinçon de Genève (Hallmark of Geneva) established in 1886, this watch complies with the highest standards of provenance, decorative refinement, and mechanical reliability. Viewable via an anti-reflective sapphire window on the transparent caseback, the self-winding movement exposes its fine hand-crafted finishes, an exclusive “côte unique” bridge finish, and a discreetly engraved anniversary signature, while satisfying a daily-resilient 3 bar (30m) water resistance.

18K GOLD HAND-GUILLOCHÉ OPENFACE FAÇADE EMPOWERED BY A CELESTIAL PERPETUAL BALLET

The visual soul of this celebratory creation is beautifully laid bare across its highly customized, silver-toned openface dial interface, meticulously executed over a solid 18K gold canvas. The Maison’s master dial-makers have hand-engraved a bespoke 270th anniversary geometric pattern inspired by the structural Maltese Cross emblem, calculated to trigger a mesmerizing interplay of light and shadow across the exposed mechanical landscape. The external perimeter zone features a traditional circular railway-type minute track, flanked by applied 18K gold hour indexes and crisp Dauphine-style hour and minute hands.

The technical interface is purposefully calculated to be clean and highly scannable, dividing its complex astronomical metrics across perfectly balanced focal zones:

1. The Upper Arced Perimeter (From 10 to 2 O’clock): Features the advanced retrograde hand-type date indicator. Tracked by a distinctive 18K gold blued retrograde date hand, the mechanism instantly snaps back to day one at the turn of the month, executing a captivating kinetic sequence.
2. The Symmetric Dial Apertures: Displays the progressive Month and Day of the week via dedicated clean cutouts, complemented by an integrated Leap Year tracker.
3. At 6 O’clock: Houses an astronomical High-Precision Moon Phase display featuring two polished 18K gold moons backing a deep starry sky to add magnificent structural depth to the layout.

MANUFACTURE CALIBER 2460 QPR/270 AUTOMATIC CORE: UNCOMPROMISED 265-PART MECHANICS

Ensuring absolute operational precision and kinetic authority is the high-performance mechanical self-winding movement, Caliber 2460 QPR/270, calculated, constructed, and hand-decorated entirely within Vacheron Constantin’s foundry in Geneva. Measuring a balanced diameter scale of 29mm and a thickness of 5.4 millimeters, this high-complication engine consists of 265 individual components and 27 jewels, operating at a high frequency of 28,800 vibrations per hour (4 Hz) while supplying a trusted 40-hour power reserve.

The integrated perpetual calendar mechanism features a sophisticated mechanical memory that automatically manages month day shifts and leap year cycles without requiring manual calibration. The openface display layout removes the boundary between traditional dial styling and moving parts, allowing an unobstructed view of the haute horlogerie decorations through the scratch-resistant sapphire crystal shield.

PREMIUM DARK BLUE ALLIGATOR STRAP EMBODYING ABSOLUTE NOBILITY

To honor the ultimate rarity of this 370-piece milestone allocation, the timepiece arrives on a premium alligator leather strap executed in a rich dark blue tone, introducing a bold, highly sophisticated contemporary contrast against the platinum chassis. Secured to the wrist by an authentic 950 platinum triple folding clasp shaped to echo the lines of the Maltese Cross emblem, this commemorative masterpiece commands a versatile and deeply prestigious presence in the most exclusive lifestyle circles.

TECHNICAL SPECIFICATIONS

1. Movement: Manufacture Self-winding Mechanical Movement, Caliber 2460 QPR/270; integrated Perpetual Calendar module, High-Precision Moon Phase, and Retrograde Date modules; fitted with a discreet anniversary signature and “côte unique” finish; stamped with the Hallmark of Geneva certification.
2. Caliber Dimensions: 29 mm diameter, 5.4 mm thickness profile.
3. Movement Components: 265 parts, 27 jewels.
4. Frequency: 28,800 vibrations per hour (4 Hz).
5. Power Reserve: 40 hours.
6. Functions: Central hours and minutes; Perpetual calendar tracking displaying Month and Day by aperture, Leap Year; Retrograde hand-type date indicator; High-precision moon phase.
7. Case: Mirror-polished solid 950 Platinum; 41mm diameter scale, 10.94mm thickness profile; historic stepped lugs and fluted caseback.
8. Dial Face: Solid 18K gold silver-toned openface dial with artisanal hand-guilloché 270th anniversary Maltese cross pattern; circular railway minute-track; 18K gold applied Dauphine hands and indexes; 18K gold blued retrograde date hand; 18K gold moons.
9. Crystal: Scratch-resistant curved sapphire with advanced anti-reflective treatment on both windows.
10. Caseback: Transparent sapphire crystal caseback showcasing the certified certified movement.
11. Strap Matrix: Premium Dark Blue alligator leather strap.
12. Clasp Assembly: Solid 950 Platinum triple folding security clasp system.
13. Water Resistance: 3 bar (30 meters / 100 feet).
14. Special Heritage: Exclusive Limited Edition of 370 pieces dedicated to celebrating the 270th anniversary of the Maison.