PATEK PHILIPPE, AQUANAUT TRAVEL TIME, Ref. 5164A, movement no. 7442833, case no. 6474731, circa 2015 A very fine and attractive, superb condition, water-resistant, automatic, cushion-shaped, stainless steel wristwatch with grey-black dial, luminous hands, date, second time zone, separate night and day indicators and sweep center seconds, black Tropical rubber strap with stainless steel double PP deployant clasp. Fitted with a cal. 324 S C FUS, stamped with the PP Seal, 29 jewels, Gyromax balance, gold rotor, sapphire-set screwed case back, sapphire crystal, screw down crown. Dial, case and movement are signed. Diam. 41 mm. Thickness 10.25 mm. Approx. overall length for bracelet 165 mm. Accompanied by a fitted presentation box. The Aquanaut Travel Time, Ref. 5164, was launched in 2011; it is the first “complicated” Aquanaut model to be released by Patek Philippe. The watch features a dual time zone mechanism indicating local and home time with separate local and home day/night indications in apertures. The GMT hand is independently adjustable via the pushers on the left hand side of the case. The grey-black dial of the present Aquanaut is embossed, with applied gold numerals and painted luminescent hour markers. The date register at 6 o’clock has a subtle globe theme.