Eight of the nine references at this size build this dial and the ninth builds no set dial at all. A white shell ground with twelve diamonds in gold settings is carried by every gold-bearing case at 36mm, in Everose, yellow and white two-metal combinations alike, and only the plain steel reference declines it, since no all-steel watch in the current catalogue carries a gem-set dial at any size or in any model. Reference 126231 is the 36mm Datejust in a combination of stainless steel and Everose gold, carrying a fluted bezel, and this configuration pairs a white mother-of-pearl dial set with twelve diamonds and a Jubilee bracelet.
The case is thirty-six millimeters in steel with an Everose gold bezel, crown and center links, and the rim is fluted, cut into a repeating series of angled facets. The dial is a slice of white shell, thin enough to be translucent in places, laid over a base and finished flat. Nacre makes its color by refraction rather than by pigment, so it takes a cast from whatever surrounds it, and in an Everose case that cast is pink; the same dial in the white gold references at this size reads cooler and in the yellow ones warmer again. Twelve round diamonds sit at the hours in gold settings matched to the case, and on a surface already returning light unevenly they are the only fixed bright points, which is what keeps the ring legible against a ground that never holds still. Without them a shell dial at this size would have no reliable structure at all, since a printed index cannot compete with the figuring underneath it. The Jubilee is built from five-piece links with the gold in three narrow inner strips, so the bracelet is broken into small warm units, and it articulates more freely than a three-piece link, following the wrist rather than holding a fixed curve. At thirty-six millimeters that matters more than it does on the larger cases, since a smaller watch has less weight to distribute and sits closer to the arm to begin with, and the Jubilee is the bracelet that lets it.
Hours, minutes, running seconds and a date advancing in a single step at midnight rather than easing into the following day. The self-winding movement in the 36mm case holds roughly seventy hours of running time, the same reserve the 41mm cases carry and considerably more than the 31mm and 28mm ones, which run a smaller movement of their own. The dial is read by position alone, since a diamond in a gold mount carries no information about which hour it stands at, and on shell that matters more than on a printed ground. Nacre has visible structure of its own, bands and figuring running at whatever angle the material was cut, and that structure competes with any small marker placed on it; the twelve settings are bright enough to stay ahead of it where a printed index would not be. A shell dial also cannot be matched to a photograph, so a buyer comparing examples across dealers is comparing descriptions rather than images and has to see the watch to know what it is. The date window at three is the one interruption in the ring, and against a shifting ground the disc is the only element on the dial holding a constant value. The seventy hours are worth stating alongside that, since they belong to this generation of the case rather than to the dial: the movement before them held substantially less, and the difference is felt on a Monday morning.
White mother-of-pearl is the most widely built ground in the range and its arrangement changes with the model as well as the size. At 36mm the Datejust references take twelve settings and the Day-Date ones take either ten baguette-cut stones or twelve settings with baguettes at six and nine, so three separate dials share the name at this diameter alone and nothing in a listing distinguishes them. Within this reference the shell is one of nine grounds across eleven configurations, five of them set with stones, and it is the only one of the eleven whose appearance is not repeatable. The nine references at 36mm divide one per metal and bezel with nothing repeated, and this is the fluted one of the three steel and Everose cases, with 126201 domed and 126281RBR set with diamonds carrying the same nine grounds between them; counting both bracelets, the shell in this alloy at this size exists in six watches, which is the same field the chocolate and the rose set dial occupy and half what the plain white manages. The reference runs to nine grounds across twenty-two rows, five of them set, so the shell is one of five set choices here.
This is the version for a buyer who wants the one element on the watch that arrived rather than being made. Everything else here is specified and repeatable: the case, the rim, the bracelet, the setting arrangement shared across eight references. The shell is not, and in an Everose case it is also warmer than the same dial in any cooler metal, so the piece has a softness the white and silver grounds do not. Anyone buying it should look at the actual example rather than a listing photograph, since the banding is the point and it will not match the picture. Anyone who wants a repeatable dial should take the plain white, built here in two marker arrangements and two bracelets, which is four watches against this one. Anyone who wants a set dial that looks the same on every example should take the chocolate or the bright black, both of which this reference sets with the same twelve stones. And anyone who wants less warm metal at the wrist should take the Oyster, where broad brushed steel gives the shifting dial something plain to sit against.
