Mint green at this size is built on four references, two with smooth rims and two with fluted ones, and the rim has nothing to do with which markers the dial gets. That is decided by the metal: the two Everose references carry the ground with Roman numerals and the steel one and the white gold combination carry it with applied markers. The two yellow references do not build it at all. Reference 126331 is the 41mm Datejust in a combination of stainless steel and Everose gold, carrying a fluted bezel, and this configuration pairs a mint green dial with a full set of Roman numerals and an Oyster bracelet.
The dial is mint green, a pale cool green with a sunray finish that lifts and darkens as the wrist turns, and it is the lightest ground the reference builds after white. Around it the rim is Everose gold cut into flutes, which is the warmest and brightest element on the watch by a clear margin. That pairing is the widest temperature gap the reference produces: chocolate and sundust were made to agree with the alloy, slate and white sit against it without arguing, and mint is the one ground that reads as actively cool inside a warm ring. Cutting the rim widens the gap further, since flutes return more light than a smooth band and make the gold more present. Gold Roman numerals on the dial are what keep the two halves of the watch connected, putting warm metal inside the crystal where there would otherwise be none. The Oyster is built from three-piece links with the gold as one continuous center line between broad flat sections of brushed steel, so most of the wrist is cool and the warm metal is concentrated at the rim, the crown and one stripe. On this ground that concentration suits the watch, because the dial and the bracelet belong to the same temperature and the gold is left to do one thing in one place. The three-piece link is also stiffer across its width than the five-piece alternative, so the bracelet holds more of a fixed curve and the watch sits squarer on the wrist, which suits a dial with as little movement in it as this one.
Hours, minutes, running seconds and a date advancing in one step at midnight rather than easing into the following day. The self-winding movement in the 41mm case holds roughly seventy hours of running time, a longer reserve than the smaller Datejust cases carry and enough to leave the watch off the wrist across a weekend. The date sits at three under a magnifying lens and takes the position a numeral would occupy, so the Roman set runs to ten characters rather than eleven. What Roman numerals give a pale dial is weight. Twelve applied batons on a ground this light would leave the surface almost undivided and the watch would read as a wash of pale color; ten full characters break the dial into sections and give the eye something to measure the color against. That is the argument for the arrangement on this ground in particular, and the two references building mint green with numerals are the two warm ones, where the characters are rose gold and carry enough weight to do the job. A sunray finish helps as well, since the ground is never a single flat value and the numerals always have something changing behind them. The seventy hours are the other thing separating this generation of the model from the one before it, and the difference is felt on a Monday morning rather than read off a specification.
Mint green is not built on a yellow case at any size. It appears at 31mm on five references, at 36mm on six, at 41mm on four and at 42mm on one, and at the two sizes where it comes two ways the marker set follows the metal in the same direction each time: Everose takes Roman numerals, the cooler cases take applied markers. On this reference the rule is broader still. Grounds made for the alloy take applied markers, borrowed grounds take numerals, and slate takes an arrangement of its own with a baton at nine. Within the reference mint is one of eight grounds and one of six carrying no stones, since only chocolate and sundust are offered set. The family is arranged in twinned pairs, each warm metal combination built once smooth and once fluted on an identical roster, while the steel reference exists only smooth and the white gold one only fluted. The smooth twin 126301 therefore builds this exact dial, and between the two the rim is the only difference. Counting both bracelets, mint green with numerals in this metal therefore exists in four watches at this size and no more, which is the entire field for anyone who wants this particular combination.
This suits a buyer who wants a color that behaves like a neutral. Mint is pale enough that at any distance it reads as a light grey or an off-white, and the green only asserts itself close up or in direct light, which makes it a quieter choice than the specification suggests. Inside a fluted rose gold rim it also produces the sharpest temperature contrast the reference offers, which is either the reason to choose it or the reason not to. Anyone who wants the rim calmer should take the smooth twin 126301, where the same gold sits as one unbroken band. Anyone who wants more of that gold across the wrist should take the Jubilee. And anyone who wants a cool dial without any color in it should take the slate or the white, both built on this reference with the same movement and the same case. Between the three, mint is the one that will be noticed and the other two are the ones that will not.
