43MM Sea-Dweller 126603 (2025) Pre-Owned RolexThe Rolex Sea Dweller 126603, commonly nicknamed the "Two Tone Sea Dweller" or the "Rolesor Sea Dweller," is the 43mm two tone version of the modern Sea Dweller, crafted in a Rolesor combination of Oystersteel and 18k yellow gold. Because this was the first time precious metals were ever used in the Sea Dweller's history, the two tone look itself is its most defining trait. The case retains the Sea Dweller's purpose built dive watch proportions with a