Rolex Datejust 31 Yellow Rolesor — Silver Index Dial | Ref. 178273

Reference 178273 occupies a considered position in the Datejust family — the 31mm mid-size case in Yellow Rolesor, presenting a fluted bezel in 18ct yellow gold against a stainless steel body. This configuration has historically bridged the gap between the full-size 36mm and the smaller Lady-Datejust, offering those who prefer a moderately scaled dial with clean proportions an elegant, precious-accented option. The silver index dial, with its crisp white-lacquer base and applied yellow gold hour markers, provides maximum legibility within a refined aesthetic.

The 178273 generation is powered by Calibre 2236, Rolex's dedicated movement for 31mm cases, featuring a silicon Syloxi hairspring for improved magnetic resistance and a 55-hour power reserve — a significant upgrade over the earlier 2135 calibre. The Oyster case offers 100 metres of water resistance, and the fluted bezel — machined from solid yellow gold — serves both decorative and structural purposes in the Datejust tradition. A Jubilee bracelet in Yellow Rolesor provides the characteristic five-link flexibility that made this combination iconic.

For collectors and wearers alike, the 31mm Datejust in Yellow Rolesor represents the quintessential Rolex proposition: technical excellence dressed with appropriate restraint. Reference 178273 was succeeded by the 278273 in the current generation, making well-preserved examples of this reference increasingly appealing as transitional collectibles. A sound long-term choice for those who value proportionality as much as prestige.