ZENITH "CHRONOMASTER OPEN EL PRIMERO Vintage 2007 Limited Edition No. 13/50 Chronograph watch in platinum 850 thousandths, partially guilloche silvered dial with applied Roman numerals and hour markers, date display and 30-minute chrono totalizer at 2:30, power reserve at 6 o'clock, escapement opening. Stepped bezel. Transparent case back revealing its signed automatic movement. Leather strap with adjustable folding clasp in platinum 850 thousandths, signed. It is accompanied by its box and over-box including its case and its user's manual. Gross weight : 218.70 g. - Diameter: 45 mm.