Brand Rolex Model (Watch) GMT-Master II Reference number 16713 Winding Automatic Case Material Gold/Steel Strap Material Gold/Steel Years 1997 original Rolex documents, no box the box is only used for photos not for sale Case Material Gold/Steel Diameter 40 mm Water Resistant 10 ATM Bezel Material Yellow gold Glass Sapphire crystal Numerals on dial No numerals Strap Material Gold/Steel Strap colour Gold/Steel Folding clasp Functions Date, GMT