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Roger Dubuis Excalibur Biretrograde Perpetual Calendar
DBEX1178
The Excalibur Biretrograde Perpetual Calendar is a timepiece that distils the most demanding traditions of Geneva watchmaking into 40 mm of pink gold. Its perpetual calendar, automatically accounting for months of 28, 30, and 31 days without manual correction, is expressed through a biretrograde display that brings mechanical poetry to the reading of time. An astronomical Moonphase, accurate to within one day over 122 years, completes the celestial portrait. Open-worked and structured in three dimensions, the dial transforms these classical complications into something resolutely present.
