Rolex Datejust 31 Yellow Rolesor — Champagne Diamond Dial | Ref. 178273

Reference 178273 belongs to the previous generation of the Datejust 31, a lineage that ran prior to the current 278xxx series and remains widely available on the secondary market. The yellow Rolesor configuration — 18ct yellow gold on the case, bezel, and crown, combined with Oystersteel on the bracelet's outer links — carries a classically warm aesthetic that the current generation has continued in revised form. The fluted bezel reinforces the formal character of the piece, its vertical ridges catching light with a regularity that has defined the Datejust identity since the 1970s. Against the champagne dial, the gold of the Rolesor construction reads as a coherent whole.

Inside runs Calibre 2235, the movement that defined this generation of the 31mm Datejust before its replacement by the updated 2236 in the current references. The 2235 is a self-winding manufacture movement with Parachrom hairspring technology and a 48-hour power reserve. The Oyster case provides 100 metres of water resistance, with a screw-down Twinlock crown. Diamond hour markers on a champagne dial create a dial that reads as formal but not overtly jewellery-forward — the diamonds are indexing tools as much as decorative elements.

On the secondary market, ref. 178273 represents a sound entry point into yellow Rolesor Datejust 31 ownership at a lower price than current 278xxx production. Buyers should note that Calibre 2235 watches will present with slightly shorter power reserve than current Cal. 2236 examples. The champagne dial is susceptible to colour variation with age — examples with even, unoxidised champagne tone across the entire surface are the most desirable. Papers and original bracelet configuration are standard considerations for valuation.