A. Lange & Söhne Langematik Perpetual 310.021 D

A. Lange & Söhne. A very fine and rare 18K gold automatic perpetual calendar wristwatch with moon phases, oversized date and zero-reset function Signed A. Lange & Söhne, Glashütte I/SA, SAX-O-MAT, Langematik Perpetual model, Ref. 310.021 D, movement no. 36'872, case no. 138'408, manufactured in 2004 Cal. L922.1 laminated nickel-finished lever movement, 43 jewels, finely hand-engraved balance bridge, swan neck regulator, 21K gold micro-rotor with platinum rim, silvered dial, applied Roman numerals with luminous dots, luminous hands, outer railway minute divisions, large double window for date, three subsidiary dials for week and 24 hour display, month and leap year, constant seconds and moon phases, large circular case, calendar change button in the band, glazed display back secured by six screws, 18K gold A. Lange & Söhne buckle, case, dial and movement signed 38.5 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.