Important Modern & Vintage Timepieces

Hong Kong, Jun 22, 2013

LOT 499

GIRARD PERREGAUX OPREA TWO MINUTE REPEATER PERPETUAL CALENDAR PLATINUM Girard-Perregaux, ?Opera Two, Tourbillon, Westminster Minute Repeater, Perpetual Calendar,? No. 3, Ref. 99740. Made circa 2003. Extremely fine, rare and important, minute-repeating platinum wristwatch with visible one-minute tourbillon regulator under three bridges, perpetual calendar with leap year indication and an 18K white gold Girard-Perregaux deployant clasp.

C. Three-body, solid, polished and brushed, stepped bezel, straight and curved lugs, transparent case back with 6 screws, sapphire crystals.
D. Black with applied white gold dart indexes, outer minute track, subsidiary silver ring dials for the date at 3, day of the month at 9, months and the leap year indication at 12, aperture for the tourbillon at 6, aperture to view the gongs between 8 and 10. White gold faceted dauphine hands.
M. Cal. GP 9897, rhodium-plated, oeil-de-perdrix decoration, 37 jewels, lateral lever escapement, one-minute tourbillon regulator, tourbillon carriage of the type designed by Ernest Guinand with A-shaped frame, monometallic balance, shock absorber, self-compensating flat balance spring, repeating on gongs with 4 hammers by activating slide on the band. Dial, case and movement signed. Diam. 42 mm. Thickness 14 mm.