The sporty steel Lady-Datejust: engine-turned bezel, blue Arabic dial.

The Lady-Datejust is the Datejust at 26mm, the size Rolex made for women from the 1950s until it moved the line to 28mm in 2015. It is the same watch in miniature: an Oyster case with a screw-down crown, an automatic chronometer movement, the date under its Cyclops lens at three, a fluted or engine-turned bezel, and a Jubilee or Oyster bracelet. Because Rolex made them for six decades in every dial and metal, the pre-owned market is deep and this is where the money goes when people search for a women’s Rolex.

The 79190 is the 2000s steel Lady-Datejust with the engine-turned bezel, the machined ring of fine lines Rolex used instead of white gold fluting, and it usually came on the Oyster bracelet with the flip-lock clasp, which makes it the sportiest women’s Datejust of its decade. The blue dial with Arabic numerals at the even hours is the dial that suits it. WGACA gives the reference in the title; box, papers and year are not stated.

WGACA gives the reference as 79190, the size as 26mm, the case as steel with sapphire, the movement as quickset automatic, the dial as blue with Arabic markers, the clasp as a flip-lock Oysterclasp and the condition as Excellent with light scratching. It does not state box, papers or year. The engine-turned bezel and Oyster bracelet are from the photograph; the calibre 2235, chronometer rating, reserve and 100 metres are Rolex’s published figures for the 79190.

WGACA authenticates in-house and is not a Rolex authorised dealer, and Amazon adds its 30-day return window. Ask for the serial, whether box or papers come with it, and when it was last serviced. Nothing here was measured on the watch.

This unit is sold by What Goes Around Comes Around (WGACA) through Amazon Luxury Stores, authenticated by the seller with Amazon’s 30-day return window on top; it is one piece, and when it sells the listing goes away, so the second button opens the live search for 26mm Lady-Datejusts.

Steel and two-tone Lady-Datejusts have resold close to what pre-owned buyers paid, sometimes more, sometimes less; that is a pattern, not a promise, and nothing here is investment advice.