Rolex Oyster Perpetual Submariner 40mm 3.10ctw Diamond and Blue Sapphire Solid 18K Yellow Gold/Stainless Steel Watch W/Mother of Pearl Dial (Ref. 16613) - This handsome timepiece is the iconic Rolex Oyster Perpetual Submariner in solid stainless steel and 18k yellow gold. There are few watches that are more iconic than the Submariner model, and this particular model Ref. 16613 is truly a collector's dream as it is no longer in production and has been replaced by the 116613 model. The watch features: 40mm solid stainless steel and 18k yellow gold case, mother of pearl dial with blue sapphire and diamond markers, date aperture at 3 o'clock, 2.50ctw diamond and 0.60ctw blue sapphire and 18k yellow gold bezel, automatic 3135 movement, screw-down crown, scratch-resistant sapphire crystal and 18k yellow gold and stainless steel Oyster bracelet. Measurements: 7.25" inside circumference. Reference #: 16613, Serial #: X7XXXX. A serial number lookup suggests that this watch was produced in 1991.