Roger Dubuis Excalibur Biretrograde Perpetual Calendar (2026)

Case is 40mm with a thickness of 12.25mm, 18k pink gold, sapphire crystals front and back, water resistant to 100m. Dial is openworked with a seven-layer construction, featuring Astral Blue mother-of-pearl biretrograde day and date displays, a matching month disc at 12 o’clock, leap year indicator at 10’clock, and an aventurine astronomical moon phase at 6 o’clock with a domed pink gold moon. Movement is calibre RD850, automatic with a pink gold rotor, 28, 800yph, with perpetual calendar, biretrograde day and date display, and astronomical moon phase, finished to Poincon de Genève standards. Power reserve is 60hrs. Limited to 188pcs. Priced at upon request