Y ZENITH, EL PRIMERO, REF. 17.0240.410AN 18 CARAT GOLD CHRONOGRAPH CALENDAR WRIST WATCH WITH MOONPHASE, CIRCA 2001Movement: Cal. 410Z, automatic chronograph, 31 jewelsCase: 18 carat gold case, screwed down display case back with six screwsDial: SilveredStrap: Zenith brown crocodile strap with an unsigned gold plated double deployant claspSize: 38mmSigned: Case, dial, movement, crown, strapAccessories: Zenith box, guarantee certificate, chronometer certificate, instruction booklets, outer card packaging