The oldest thing about this watch is on the outside and the newest is under the glass. Reference 278274 is the 31mm Datejust in a combination of stainless steel and white gold with a fluted bezel, and this configuration carries a pink dial with applied Roman numerals, on the Oyster bracelet. The fluted rim descends from a functional device that predates the model itself, the flutes originally giving a tool purchase to screw the bezel down onto the case. The Roman numerals are the oldest marker set the watch still carries. The pink ground is among the most recent additions to the range. Assembled together they span most of the model's history, with the century-old elements at the perimeter and the modern one in the middle.
That arrangement is more common than it sounds and rarely this legible. Rolex tends to introduce novelty on the dial and leave the case and bezel alone, so a buyer looking at any recent colored Datejust is looking at an old watch with a new face. Here the contrast is sharpened because the exterior elements are the most traditional versions available, the fluted rim rather than a smooth or set one, and because the dial is one of the few genuinely new colors. The Roman characters sit in between, old in form and applied in white gold that reads cool against a warm ground, which is a relationship the model did not have before pink entered the range. They are drawn narrow for the 31mm diameter and cut back further where they meet the date frame, which at this size is the tightest that arrangement gets. The Oyster bracelet is three broad flat links, brushed across the top with polished flanks, closing on a concealed clasp. The case is polished on the flanks and brushed across the lug tops, the lugs are short relative to the case, and every gold element is solid rather than plated. The bracelet tapers continuously from the end links so the widest point of the whole watch is the bezel, which places the oldest element on the piece at its broadest point.
The watch does one thing beyond telling the time. The date changes instantaneously at midnight rather than creeping through the hours around it, the function the Datejust introduced in 1945 and the one the model takes its name from. On a Roman dial the window replaces a numeral rather than interrupting a ring of identical markers, so the aperture occupies a position the layout already accounted for. The disc is matched to the pink ground rather than left white, which on a pale dial has to be closer than on a dark one since any discrepancy sits in plain sight. The printed numeral inside it is the darkest mark on the face and the most legible thing on the dial. The window and its lens together take up proportionally more of a 31mm dial than of any larger case in the range. The Cyclops lens, fitted to the model since 1953, enlarges the numeral roughly two and a half times, and is itself one of the older elements on the watch, proportionally the largest single feature anywhere on a dial this size. Correction runs through the winding crown at a dedicated position and leaves the hands where they are. The movement is self-winding with a power reserve of approximately fifty-five hours, the figure the smaller cases carry rather than the longer one fitted to the 36mm, and a stop-seconds function allows the watch to be set against a reference. The crown screws down and the bracelet closes flush against the case.
The Datejust arrived in 1945 as the first self-winding wristwatch to show the date in a window, and the 31mm case sits between the 28mm Lady-Datejust and the 36mm that has always been the model's central size. Rolex registered the name for its steel and gold construction in 1933. Rolex keeps two separate pink-family lacquers and never mixes them, a warmer rose confined to the Everose references and this cooler pink for the steel and white gold cases, so the ground here was mixed for a cool case rather than borrowed from the warm side of the range. That is a modern piece of catalogue logic applied to a watch whose exterior has barely changed in seventy years, and it is a fair description of how the model has developed generally: the outside settles and the inside keeps moving. That is worth knowing when judging how a configuration will age, since the components most likely to look of their moment are the ones under the crystal and the ones least likely are everything around them. A buyer choosing a recent color is accepting that trade knowingly rather than by accident. Pink is one of three grounds at this reference listed both plain and set, and one of two whose set form comes two ways, with diamond hour markers or with a large Roman six carrying eleven stones.
The buyer for this is drawn to the dial and keeps the rest of the watch traditional. That is the usual order of things and this configuration serves it plainly, with a color that could not have been ordered a decade ago sitting inside a bezel and bracelet that could have been ordered in 1960. It also explains why the fluted rim suits the pink better than a set one would, since stones would place a second modern gesture at the perimeter and the watch would lose its footing. The Oyster is the flatter and more structural of the two bracelets and keeps everything below the case firmly on the traditional side. Buyers arrive here from the neutral Roman dials having wanted a ground with a temperature, and from the Everose references having decided a warm case was more than they wanted. A lacquered dial shows dust more readily than a metallic one and a pale ground shows it soonest, and the flutes hold dust in their grooves in a way a smooth rim does not.
