Two numerals out of twelve carry stones, and the treatment does not exist outside 36mm. Nineteen references in the current range set the six and the nine with diamonds while leaving the other ten Roman numerals in plain gold, and every one of them is a 36mm case. Reference 126283RBR is the 36mm Datejust in a combination of stainless steel and yellow gold, carrying a rim set with diamonds, and this configuration puts that Roman set on an olive green ground with a Jubilee bracelet. Which numerals get the stones is not arbitrary. Six sits at the bottom of the dial and nine at the left, both well away from the date at three and from the twelve at the top, so the setting lands in the two places where nothing else is asking to be looked at.
Green is the ground that takes the most from the metal around it, and yellow gold pulls olive toward its warm side, so the dial reads drier and browner here than the same nominal shade would in a white metal case. Against that, the numerals are solid gold matched to the case and polished on their upper surfaces, which puts ten warm shapes on a warm ground and two that behave completely differently. Stones do not take a cast from what surrounds them the way a lacquer does, so the set six and set nine stay cold and bright while their neighbors stay warm, and the difference between the two kinds of numeral is more visible on green than it would be on a light ground. The rim above them is set with stones held in yellow gold, which draws a bright warm boundary around the whole face and gives the two set numerals something to answer at a distance. The case is 36mm, and the size matters directly here: the numerals are large enough for the setting to be legible as setting rather than as a smudge of light, which is the practical reason the treatment stops at this diameter. The Jubilee bracelet takes the two case metals into five narrow rows, and those rows merge past close range so the bracelet reads as gold. The date at three sits under a magnifying lens fitted into the crystal, and it is the only element on the face that is neither stone nor gold nor green. Set against the plain olive dial in the same reference, the difference is smaller than the specification suggests.
The mechanical brief is short. Hours, minutes, running seconds and a date that changes in one step at midnight rather than creeping across into the new day. That step is what the model was built to introduce and what its name still points at, and it remains the difference between a date designed into a watch and one added afterward to a movement that was finished without it. The self-winding movement holds roughly seventy hours of running time, so the watch can be set down on a Friday evening and picked up on Monday still correct. Nothing further has been included. There is no second time zone, no chronograph and no calendar work beyond the date, and on a dial carrying twelve numerals of which two are set, the absence is what keeps the face organized. A subdial would sit exactly where the six is, and the six is the numeral doing the most work on this dial. Only two dials at this reference carry the Roman treatment, this one and the silver, and both take the same twenty-four stones across the six and the nine. The other three set grounds use diamond hour markers in gold settings instead, which is a different decision about where the eye should land.
The setting treatment is the clearest evidence that 36mm is the size this reference family is designed around. Nineteen references use it and none of them are 28mm, 31mm, 40mm or 41mm, so a buyer who wants Roman numerals with two of them set has exactly one case size available. Within the reference the treatment is offered on two grounds only, olive green and silver, which is a narrower choice than the white two-tone cases allow: 126234 and 126284RBR carry the same setting across four grounds including aubergine, dark grey and pink. The yellow two-tone group behaves as a set of three. This reference, 126233 and 126203 all offer the identical pair of grounds with the identical setting, and they differ only at the rim, which is set with stones here, fluted on 126233 and domed on 126203. Choosing between them is a question about the edge of the watch rather than about the dial, and this is the version where the edge is at its brightest. Olive is the more unusual of the two grounds and the one that makes the setting most visible, since silver gives the stones a lighter field to compete with. There is also a size argument buried in the setting. A stone fitted into a numeral has to be small enough to sit inside the stroke, so at 31mm the same idea would either crowd the numeral or shrink the stones past the point of being seen, and the factory has drawn its line where it draws it for that reason.
This is for a buyer who wants a stone-set dial that still reads as a color rather than as a jewelry surface. The setting is confined to two numerals, so the green is never broken up, and the effect is a dial with a warm field, ten warm markers and two cold points that only assert themselves when the light finds them. The rim carries the brightness at the edge and the Jubilee carries the warmth at the wrist, which leaves the dial free to be the quietest part of a watch that is not quiet overall. Anyone who wants the same setting on a neutral ground should take the silver version of this reference. Anyone who wants the green without stones on the face should take the plain olive dial, which is the same color with ten more plain numerals and nothing set. This configuration sits between the two and does not feel like a compromise between them.
