A. LANGE & SOHNE, GRAND LANGE 1 LUMINOUS Reference : 115029. Serial number: 165776. 18k white gold case. Black dial, luminous hands and hour markers. Large date at 2 o'clock and 72-hour power reserve indicator. Hand-wound mechanical movement (calibre L901.2.). Leather strap with white gold buckle, signed. Sapphire crystal. Circa 2006. Diameter: 42 mm. Gross weight: 119.8g. The watch comes with its case and papers. A very fine 18K white gold, 72h power reserve, mechanical movement wristwatch, by A. Lange & Sohne. Circa 2006.