Rolex Yacht-Master 40 Yellow Rolesor — White Dial | Ref. 16623

Reference 16623 is the original Yacht-Master 40 in Yellow Rolesor — the configuration that established the model's visual identity when Rolex introduced the Yacht-Master line in 1992. The 40 mm Oyster case pairs Oystersteel with an 18 ct yellow gold bezel and crown, creating the characteristic two-tone aesthetic that has long been synonymous with nautical luxury. Against the bidirectional rotatable bezel in yellow gold with its raised platinum markings, the white dial reads with clean authority.

Calibre 3135, Rolex's flagship perpetual-calendar movement and one of the most thoroughly proven self-winding calibres in the industry, powers reference 16623. Operating at 28,800 vph with a paramagnetic blue Parachrom hairspring, the 3135 delivers approximately 48 hours of power reserve and has been COSC-certified for chronometric precision. The Oyster case is water-resistant to 100 metres, and the Triplock crown provides three seals against moisture ingress — functional credentials that back up the Yacht-Master's maritime positioning.

On the collector market, 16623 occupies a cherished position as the reference that defined Yacht-Master proportions and aesthetics before the subsequent generation of larger, more aggressive sports designs. Its 40 mm dimensions feel balanced and wearable by contemporary standards, and the yellow Rolesor combination has aged gracefully. Well-preserved examples — particularly those retaining original dial printing, unpolished case surfaces, and full paperwork — command a premium that reflects both scarcity and enduring desirability among Rolex sport-elegance enthusiasts.