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
Terminal coil

Terminal coil

A fundamental component in a watch movement that is responsible for transferring power from the power source to the escapement. It is typically made of thin copper wires carefully wound around a metal piece with two ends used to secure the coil within the watch movement. The terminal coil is located at the end of the watch movement and is an integral part of the internal mechanisms of the watch, aiding in ensuring the proper performance of the timepiece.