A. Lange & Söhne. A Fine Platinum Automatic Wristwatch with Oversized Date and Zero-Reset FunctionSigned A. Lange & Söhne, Glashütte I/SA, Sax-O-Mat, Langematik Model, Ref. 308.025, Movement No. 4622, Case No. 114'835, Circa 1998Cal. L921.4 three quarter plate automatic movement, 21k gold micro-rotor with platinum rim, finely hand-engraved balance bridge, 45 jewels, solid silver dial, applied baton numerals, luminous hands, large double aperture for date, subsidiary dial for constant seconds, circular case with date change button in the band, sapphire crystal display back secured by six screws, platinum A. Lange & Söhne buckle, case, dial, and movement signed37mm diam.