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
Guilloché

Guilloché

Is a technical artistic technique used to create finely engraved patterns consisting of intricate interlacing and symmetrical lines on watch dials, parts of the watch movement, and watch cases. This pattern is applied to the surface of metal watch components using a special machine that accurately carves repetitive lines and engravings.

This craft, which has been around for centuries, now involves the use of antique machines to engrave precise patterns on metal watch components. Guilloché requires great skill and precision in execution, creating visual and three-dimensional effects by manipulating the angles of the engravings and the depth of the carving.