A Zenith El Primero gold chronograph wristwatch, automatic movement, circular white dial with black Arabic numerals, subsidiary dials at three, six and nine, date at five, glazed reverse, signed case, dial and movement, 18ct gold case to brown leather bands, case reference 17 0500 400, no. 739/750, diameter 38.5 mm, boxed with papers. Condition: Ticking at time of inspection, not recently serviced or timed. In near new condition with some minor evidence of wear to bands.