Rolex Sea-dweller 16660 MK1 Matte Dial length-regular The pie-pan dial has unusual

The pie-pan dial has unusual doorstop markers at six and nine and crisp black text

anchor ( and its vinyl holder)

Sandwich cut -out Arabic numerals

- Omega archive extract

these movements measured 21

Rolex Sea-dweller 16660 MK1 Matte Dial length-regular The pie-pan dial has unusualWith 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