Rolex Sea-dweller 16660 MK1 Matte Dial 17 The A277 began production in

The A277 began production in the early 60s and ran until the 1970s and we have a mk2 example on offer today

proud encircled “T

There is no lume on the two-tone salmon dial and the watch is fitted with delicate non-lume blued hands

The black dial has 12-3-6-9 arabic numerals that have taken on a great patina that matches the pencil hands nicely

Rolex Sea-dweller 16660 MK1 Matte Dial 17 The A277 began production inWith this Sea Dweller, also nicknamed the Triple Six, Rolex doubled the depth rating to 4,000 ft thanks to its larger helium escape valve and sapphire crystal, compared to its predecessor, reference 1665. Furthermore, Rolex introduced a unidirectional bezel for diver safety, making this Sea Dweller a true transitional model. This example features a rare matte dial, used in the first production batch before Rolex later switched to glossy dials with