The Excalibur Bi-Retrograde Calendar by Roger Dubuis

This year, Roger Dubuis celebrates its 30th anniversary, and for the occasion, the company pays tribute to its co-founder’s favourite complication: the bi-retrograde display.

This function, previously featured in the Excalibur Grande Complication alongside a dozen other highly complex mechanisms, takes centre stage once again. The Maison has also introduced a less complicated, more classic edition to further honour the bi-retrograde display.

Also referred to as “the ecliptic counters” by the Maison a nod to their elliptical shape and distinctive role in indicating the months and date the design showcases a symmetrical dial layout. Enhanced by refined detailing, it pays homage to the Maison’s early creations from 1996.

Glossary

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Glossary
Niello

Niello

Is a black alloy composed of copper and silver, often blended with copper to enhance its durability. It is commonly used as a layer on engraved or embossed metal surfaces. Lead sulfides can also be added to the mixture.

Niello is applied as a decorative element in watches, creating stunning black designs against a metallic background. This technique has been historically used in antique or vintage watches to showcase intricate craftsmanship and add artistic flair to the watch's appearance.