ZENITH CHRONOMASTER EL PRIMERO. REF. 03.1260.4021. SOLD IN 2005 Steel bracelet watch on leather with chronograph and power reserve CASE: round with steps, sapphire back. DIAL: black with 'open heart' revealing the balance and escapement, applied hour-markers, 30-minute chrono totalizer and sector at 6 o'clock to indicate the power reserve. MOVEMENT: automatic, El Primero cal. 4021. STRAP: leather, steel buckle, signed. Dial, case and movement signed. Numbered DIAM. 45 mm. WITH: case, certificate of origin and instructions for use. Condition report on request. Condition report on request. A stainless steel self-winding Chronomaster El primero watch by Zenith, sold in 2005.