Patek Philippe 2497

Patek Philippe. A superb and unique platinum perpetual calendar wristwatch with sweep centre seconds, phases of the moon and black hard enamel Breguet numerals Signed Patek Philippe, Geneve, ref. 2497, movement no. 888'075, case no. 687'949, manufactured in 1954 Cal. 27 SC Q nickel-finished lever movement stamped twice with the Geneva seal, 18 jewels, bimetallic compensation balance, micrometer regulator, the silvered matte dial with black hard enamel Breguet numerals, sweep centre seconds, two apertures for day and month, subsidiary dial indicating phases of the moon combined with date, the large circular case with downturned fluted lugs, snap on back, original platinum Patek Philippe buckle, case, dial and movement signed 37 mm. diam.