Reference 228236-0008 houses the Day-Date 40's 40 mm Oyster case crafted entirely in platinum, featuring a fluted bezel, scratch-resistant sapphire crystal with a Cyclops lens over the date, and a screw-down crown with Twinlock double waterproofness. The case architecture relies on a monobloc middle case and screw-down case back, with water resistance rated to 100 metres / 330 feet.
The green dial carries Roman numeral hour markers and displays the day and date through instantaneous apertures with secure rapid-setting. The platinum President bracelet — built on semi-circular three-piece links — closes with a concealed folding Crownclasp, completing a fully platinum composition from case to clasp.
Power comes from the Calibre 3255, a perpetual mechanical self-winding movement from Manufacture Rolex, offering a precision rating of -2/+2 seconds per day after casing and approximately 70 hours of power reserve. The oscillator features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers, and the movement holds COSC certification. This piece is presented as a complete set with box and papers, produced in 2023.
