Zenith - an El Primero Chronomaster chronograph watch, 45mm. Zenith - a El Primero Chronomaster chronograph bracelet watch. Stainless steel case with exhibition case back and rose metal bezel. Case width 45mm. Reference 51.260.4047, serial 242382. Signed automatic calibre 4047. Silvered dial with baton hour markers, date aperture to two, subsidiary recorder dial to three, moonphase aperture to six, aperture exposing workings between nine and twelve. Fitted to a signed bi-metal bracelet with double folding clasp.