Rolex Sea-dweller 16660 MK1 Matte Dial lug-width-in-mm-19 - Valjoux 88 movement

- Valjoux 88 movement

boxes and even the hangtag

but this may be one of the rarest and most unusual we have ever seen and will appeal to the connoisseur collector of special vintage Rolex

to the introduction of a larger GMT hand

Rolex Sea-dweller 16660 MK1 Matte Dial lug-width-in-mm-19 - Valjoux 88 movementWith 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