Rolex Sea-Dweller 1665

Rolex. A very fine stainless steel automatic diver’s wristwatch with sweep centre seconds, date, gas escape valve and bracelet

Rolex. A very fine stainless steel automatic diver’s wristwatch with sweep centre seconds, date, gas escape valve and bracelet Signed Rolex, Oyster Perpetual Date, Sea-Dweller, 2000ft = 610m, ref. 1665, case no. 5’491’478, circa 1978 Movement: automatic, cal. 1570, 26 jewels Dial: black, matte, dot baton and dagger luminous numerals, luminous hands Case: screw back engraved “ROLEX, Rolex patent Oyster Gas escape valve” Signed: case, dial and movement Dimensions: 39.5 mm. diam.; overall length approx. 200 mm With: stainless steel Rolex Oyster bracelet, extendable deployant clasp, two additional links in Rolex paper bag , Please note the number below the image in the printed catalogue should be 278 instead of 279.In 1977 Rolex substantially modifies the dial of the SeaDweller, discontinuing the DRSD dial (last examples seen at around 5.2M serial) and introducing a new full white dial, which is now known as the “Great White”, and is first seen on cases as low as 5.0M. As for the DRSD, also the Great White presents an evolution, with at least five versions identified as Mark 0 to Mark 4. The first two series are very rare and can be recognized by the straight “ft” and “m” in the depth rating. All the later Marks will instead present italic fonts for these designations. Furthermore, Mark 1 dials – such as the present one – are distinguishable by the very small hole at the base of the Rolex crown. Mark1 dials can be found approximately up to serial number 6.2 M.