Starting from the 1960s #Rolex have worked with the deep sea diving firm #COMEX to produce reliable timepieces for their deep sea explorations. COMEX approached Rolex to introduce a helium escapement valve to the case to bear with the high pressure underwater. The present Submariner made circa 1978, is a terrific example with a crisp case and case back stamped issue number 830, and dial with the COMEX signature. Fine Watches | Nov 24 – Dec 8 Lot 8016, Est. HK$1.2- 2m/ US$154k – 256k #SothebysWatches Rolex #Submariner #RolexSubmariner #RolexWatch