Patek Philippe Perpetual Calendar Chronograph 3971

Patek Philippe. A very fine and very rare 18K gold perpetual calendar chronograph wristwatch with moon phases and original certificate Signed Patek Philippe, Genève, ref. 3971, movement no. 875'504, case no. 2'856'553, circa 1989 Cal. CH 27-70 Q mechanical lever movement stamped with the Geneva seal, 24 jewels, Gyromax balance, free sprung regulator, champagne dial, applied gold baton numerals, two windows for day and month, three subsidiary dials for constant seconds and 12 hours register, 30 minutes register and leap year indicator, date and moon phases, circular water-resistant-type case, downturned fluted lugs, glazed display screw back, two round chronograph buttons in the band, 18K gold Patek Philippe buckle, case, dial and movement signed 36 mm. diam. , Prospective purchasers are advised that several countries prohibit the importation of property containing materials from endangered species, including but not limited to coral, ivory and tortoiseshell. Accordingly, prospective purchasers should familiarize themselves with relevant customs regulations prior to bidding if they intend to import this lot into another country.