Rolex Datejust 1623

Reference 1623 is a rare variant of the 36mm Oyster Perpetual Datejust from the 16xx series, produced from the 1960s through the 1970s. Its technical specification denotes a ‘Yellow Rolesor’ construction, combining a stainless steel case with a solid 18k yellow gold winding crown and a unique bezel designated by the 23 suffix. This bezel features a finely engine-turned or ‘milled’ texture in 18k gold. The watch is powered by the Rolex Caliber 1575, a non-quickset date automatic chronometer. The significance of the Ref. 1623 lies in its status as the rare, two-tone, engine-turned model of the vintage non-quickset era.