The Rolex Sea-Dweller Replica watches is one of the most significant diving timepieces designed in the second half of the 20th century. The cooperation with diving professionals and government agencies guided replica rolex to introduce the first-ever use of the helium gas escape valve in a wristwatch. This revolutionary design enabled the replica watches to have the capability to withstand great underwater pressure while maintaining the functionality and integrity of timekeeping. The Ref. 1665 Replica rolex watches Sea-Dweller went through several revisions and iterations in order to perfect the design as the best diving watch during its development, which allowmany of the deepest diving missions. As an iconic model, the Sea-Dweller has become highly collectible; the most coveted being the very earliest examples. The instance offered in Antiquorum’s September auction bears one of the earliest serial numbers of this reference ever recorded. This places theReplica watchesin the era of Single Red Sea-Dwellers, of which only six are known to exist.