Patek Philippe - A very fine and rare platinum perpetual calendar split seconds chronograph wristwatch with phases of the moon Ref. 5004

Lot 3085. Cal. CHR 27-70 Q nickel-finished "Nouvelle Lémania" base lever movement stamped with the Geneva Seal, 28 jewels, Gyromax balance adjusted to heat, cold, isochronism and 8 positions, Breguet balance-spring, straight line lever escapement, patented split seconds disengagement mechanism, the white opaline dial with applied white gold Arabic numerals and outer 1/5th minute divisions, white gold feuille hands, two windows for day and month, three subsidiary dials for constant seconds combined with 24 hour indication, 30 minutes register with leap year cycle and date combined with phases of the moon, in circular water-resistant-type case with stepped rounded bezel and downturned fluted lugs, three round chronograph buttons in the band and crown, screw on glazed display back, together with a platinum Patek Philippe concealed deployant clasp, case, dial and movement signed. 37 mm. diam. Estimate: HK$1,200,000-1,600,000 (US$150,000-200,000)

Note : Accompanied by a Patek Philippe presentation box with outer packaging, Certificate of Origin, manual and brochures in leather wallet and adjustment tool.

Production of the reference 5004 began in 1995 and remains the most complicated model in Patek Philippe's line of stopwatches. The calibre CH 27-70 Q is the beating heart of this remarkable timepiece. The movement consists of no fewer than 407 miniscule parts and is based on an ebauche crafted by "Nouvelle Lemania" exclusively for Patek Philippe incorporating the patented split seconds disengagement mechanism and is capable of measuring elapsed time with accuracy to the fraction of a second.

The 5004, together with the reference 5959P released in 2005, are the only split seconds chronograph wristwatch currently in production by Patek Philippe.

The model is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 312.

Christie's. Important Watches. 29 November 2007. Grand Hall (New Wing), Hong Kong Convention & Exhibition Centre. Wanchai, Hong Kong