Patek Philippe Perpetual Calendar 2438/1

Patek Philippe. An extremely fine and rare 18K pink gold water-resistant perpetual calendar wristwatch with sweep centre seconds, phases of the moon, screw back and luminous hour markers and hands Signed Patek Philippe, Geneve, ref. 2438/1, movement no. 888'176, case no. 2'619'215, manufactured in 1959 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 luminous accents to the applied pink gold baton numerals, pink gold luminous dauphine hands, outer Arabic five minute divisions, sweep centre seconds, two windows for day and month, subsidiary dial indicating phases of the moon combined with date, the large circular water-resistant-type case with downturned fluted lugs, screw back, 18K pink gold Patek Philippe deployant clasp, case, dial and movement signed 37 mm. diam.