Roger Dubuis
Excalibur Biretrograde Calendar
DBEX1179This year, the Maison pays tribute to its co-founder’s favourite biretrograde display, also named “the ecliptic counters” by the Maison – as a reference to their elliptical shape and their particular function indicating months and date.
Pink Gold – Self-winding – 40mm
Detailed features & specifications
On a retrograde display, the hand moves along a semi-circle scale and returns to zero at the end of each cycle. Mr. Roger Dubuis co-patented his own retrograde mechanism in 1989, which became the basis for the Maison’s first ever watch.
With their vision for expressivity, the co-founders at Roger Dubuis launched their very first timepiece with a distinctive biretrograde display. 30 years later, the Maison has revived that signature style in a refined day-date calendar timepiece of modern aesthetics and certified excellence.
Roger Dubuis was the first watchmaker to use 18K pink gold and mother-of-pearl together. For this refined 40mm timepiece, the materials are used along with other tributes to the Maison’s heritage, including the symmetrical layout, the skeletonized hands, the historic font, and the shape of the scales, which are wide on the outside and narrow towards the centre.
Crafted in-house, the automatic Calibre RD840 features a day-date calendar complication and has been decorated and hand-polished to achieve the esteemed Poinçon de Genève certification. The oscillating weight is a modernized take on the version from 1996, and appears next to a meaningful quote, attributed to the two Roger Dubuis co-founders.
Technical Details
Case – 18K pink gold case with matching bezel, crown, and open case back. Sapphire crystal with anti-reflective coating.
Case Size – 40 mm
Water Resistance – 10 bar (100 m)
Dial – Silver-plated satin-brushed dial with pink gold accents, mother-of-pearl inserts at 12 and 6 o’clock, and double-surface flange featuring opaline and ridged finishes. Polished pink gold-plated hour markers with white SLN. Pink gold-plated retrograde calendar display with black transferred markings.
Strap – Brown calf leather strap sculpted to complement the case and movement. Interchangeable with Quick Release System (QRS).
Clasp – Triple folding clasp in 18K pink gold. Interchangeable via QRS.
Clasp Material – 18K Pink Gold
Movement – Calibre RD840
Automatic movement featuring a double retrograde calendar complication, developed and hand-finished to meet Poinçon de Genève standards.
Movement Type – Self-winding
Functions – Hours, minutes, day, retrograde date
Power Reserve – 48 hours
Frequency – 4 Hz (28,800 vph)
Decor – Circular-grained main plate, Côtes de Genève bridges
Number of Components – 293
Number of Jewels – 35