Rolex Sea-dweller 16660 MK1 Matte Dial 1985 with the hidden signature in

with the hidden signature in the X numeral and a date function

-⁠ ⁠Fully checked by our watchmaker

This funky AP comes with both inner and outer boxes

The non-luminous dial is champagne colour with a horizontal brush finish and delicate yellow gold hands

reference 62510H

Rolex Sea-dweller 16660 MK1 Matte Dial 1985 with the hidden signature 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