A. Lange & Sohne ref 1815 an 18ct gold wristwatch, circa 2000 dial: silvered calibre: cal. 941.1 manual winding movement, 21 jewels movement number: 13714 case: 18ct gold, sapphire display back secured by six screws case number: 123762 Closure: a. Lange & Sohne 18ct gold buckle and leather strap dimensions: 36 mm diameter signed: case, dial and movement. Accessories: a. Lange & Sohne guarantee dated October 2000, instruction booklet, promotional booklet and presentation box