A. Lange & Söhne. A Lady's Fine Limited Edition 18k White Gold and Diamond-Set Wristwatch with Date, Power Reserve, and Mother-of-Pearl DialSigned A. Lange & Söhne, Glashütte I/SA, Doppelfederhaus, Little Lange 1 Soiree Model, Ref. 813.029, No. 17/20, Movement No. 45'376, Case No. 160'247, Circa 2005Cal. L901.4 three-quarter plate mechanical movement, twin spring barrels, 53 jewels, screwed gold chatons, mother-of-pearl dial, applied Roman and diamond-shaped numerals on a mother-of-pearl chapter ring, eccentric subsidiary dial for constant seconds, fan-form sector for power reserve, large double date aperture, circular case, diamond-set bezel, sapphire crystal display back secured by six screws, 18k white gold A. Lange & Söhne buckle, case, dial, and movement signed36mm diam.