Patek Philippe Ref 2554/1 a platinum wristwatch circa 1960, dial: silvered, baton hour markers, subsidiary seconds, calibre: cal. 9'90 manual winding, 18 jewels, movement number: 977503, case: rectangular-shaped curved, snap on back, case number: 696403, Closure: Patek Philippe black leather strap and 18ct white gold buckle, dimensions: 40 mm x 22 mm, signed: case, dial and movement, accessories: none