Z Series - Belgian papers ! Full steel on Oyster bracelet, black "SWISS MADE" dial, luminescent hands and indexes, date, black bezel, sapphire glass, screw down crown, automatic movement chronometer certified (COSC). With original box and papers, full set! Z Series - Full steel on Oyster bracelet, black "SWISS MADE" dial, luminescent hands and indexes, date, black bezel, sapphire glass, screw down crown, automatic movement chronometer certified (COSC). With original box and papers, full set!