Rolex 1999 GMT-Master II 40mm Stainless Steel Watch W/Custom Blue Sapphire, Ruby and Diamond Bezel (Ref. 16710) - This handsome timepiece is the Rolex GMT-Master II, which features: 40mm stainless steel Oyster case, black dial with highly legible Chromalight display including luminous Mercedes hands and dot hour markers, minute markers around the outer rim, date display at the 3 o'clock position, stainless steel Oyster bracelet with folding Fliplock clasp, 3185 Automatic self-winding chronometer movement with a 50-hour power reserve, and a custom bezel with approximately 2.80ctw rubies and blue sapphires and 1.30ctw diamonds. Reference #: 16710, Serial #: A9XXXXX. A serial number lookup suggests that this watch was manufactured in 1999. Condition: Overall excellent working condition. Light signs of gentle wear.