Thirty years ago, the Maison opened its first chapter with a biretrograde display. The Excalibur Biretrograde Calendar picks up this same display design, featuring a pink gold and mother-of-pearl 40 mm case with the Poinçon de Genève. Two hands trace a semicircle, snap back to one and start again. Our first signature display, restated.
Light crosses the dial and the biretrograde answers. Pink gold catches it, mother-of-pearl holds it and the skeletonised hands reveal it all. Seven layers of depth, fourteen finishes applied by hand.
Drawn wide at the outer edge and tapered toward the center, the ecliptic counters follow the ellipse set in 1996. Small seconds at six, the historic stamp at twelve. Mother-of-pearl shifts beneath the hands. The face stays balanced and its architecture legible.
A display complication treated as a language. From the first patent to the calibre RD840, the retrograde runs through three decades of the Maison. The Excalibur Biretrograde Calendar carries the signature forward.
#ROGER #DUBUIS #Excalibur #Biretrograde #Calendar