Vintage Rolex Sea-Dweller ref 1665 (1973) in general are some of the rarest vintage Rolex sports models out there. Rolex introduced the celebrated model in 1967 and they still make it today. The Sea-Dweller was developed for use by professional deep-sea saturation divers, particularly with its inclusion of a “Helium Escape Valve” or “HEV” on the 9 o’clock side of the case to help the watch survive decompression from dry, pressurized environments. The earliest Sea-Dweller examples had red printing and are called “Single Red” because of the one line of red text about the 6 o’clock marker, while the “Double Red” (featured here) features the words “Sea-Dweller” and “Submariner 2000” in red text above the 6 o’clock marker. Rolex made the double red version until around 1978 and at that point they switched to all white text. Rolex continued to use all white text on the Sea-Dweller until 2017 when they re-introduced the 43mm 50th anniversary version with a single line of red text. The example we have here today has the two lines of red text on the dial and is from circa 1973. It features a mark III dial and features a lovely faded bezel that originally was black and has turned to a gorgeous grey color that adds to the overall character. This DRSD has aged so nicely over the years from the nicely faded bezel to the creamy lume, this thing just sings in the light. Shop Rolex Sea-Dweller Collection