Ref #: EJWAT8431
Ref. 725 Perpetual Calendar Astronomical Pocket Watch
Patek Philippe perpetual calendar keyless, open-faced pocket watch (ref. 725), featuring a m. 17'''-170, rhodium-plated with "fausses-côtes" decoration, 18 jewels, straight line lever escapement, adjusted for heat, cold, isochronism and 5 positions, blued steel Breguet balance spring with swan neck regulator; three-body, "variée carrure plate" with a concave bezel; silver dial with applied gold Arabic numerals and gold "feuille" hands; perpetual calendar complication with sub-dials for days-of-the-week, month with leap year indication, date and seconds with moon-phase display aperture; and 46mm, 18k yellow gold case with a polished gold case back. Case, dial and movement signed Patek Philippe, circa 1951.