The Retrograde Perpetual Calendar Rare Handcrafts Reference 5160/500 is reinterpreted in a new rose gold version with a silvery opaline dial. The dial center, bezel, case middle, crown, hinged cover and lugs, as well as the fold-over clasp and strap screws are adorned with richly hand-engraved decoration composed of volutes and foliage inspired by a pocket watch from the Patek Philippe Museum. Self-winding 26-330 S QR caliber drives displays of day, leap-year cycle and month through apertures at 9, 12 and 3 o’clock. The date is indicated by a retrograde hand sweeping over an arc between 8 and 4 o’clock.
The Officer’s-style case features a sapphire crystal case-back protected by a hinged cover.

Watch
Self-winding mechanical movement. 
Caliber 26-330 S QR. 
Perpetual calendar with retrograde date hand. 
Day, month and leap year in apertures. 
Moon phases. 
Sweep seconds.
Dial : Silvery opaline, hand-engraved center, blackened white gold applied Breguet numerals. 18K gold dial plate.
Case : Rose gold. 
Hand-engraved case, hinged cover, crown, lugs and screws. 
Diameter: 38 mm. 
Thickness: 11.81 mm. 
Water resistant : 30 m. 
Sapphire crystal case back protected by a hand-engraved hinged dust cover.
Strap : Alligator leather with square scales, hand-stitched, patinated brown. 
Hand-engraved rose gold fold-over clasp.
Diameter: 28 mm. 
Thickness: 5.36 mm. 
Number of parts: 368. 
Winding rotor: 21K gold central rotor. 
Frequency: 28,800 semi-oscillations/hour (4 Hz). 
Power reserve: min. 35 hours - max. 45 hours.