The Oyster Perpetual is the line without additions: the waterproof Oyster case of 1926 and the Perpetual self-winding rotor of 1931, and nothing else — no date, no bezel function, no complication. Everything else Rolex makes is this watch with something added, which is why it is the clearest statement of what the company actually builds. At 41mm in Oystersteel. What matters on examination: dial condition, decisively, since a plain dial hides nothing and a replacement makes a different watch; case sharpness, which on an undecorated case is the whole of its character; and bracelet stretch. Confirmed through the desk. Maker: Rolex. Reference: 134303-0001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.