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
Labradorite

Labradorite

A mineral belonging to the calcium-rich "feldspar" group, commonly found in igneous rocks. This mineral is known for its vibrant display of colors, which is a result of its internal fractures. This phenomenon, referred to as "labradorescence," gives the impression that the stone is playing with an array of colors as light reflects back and forth within it. Labradorite possesses a triclinic crystal system and has a hardness of 6 to 6.5 on the Mohs scale, making it relatively durable.