Roger Dubuis Excalibur watches

The Roger Dubuis Excalibur is the brand's flagship collection, launched in 2005. Its name was inspired by a medieval sword given to Carlos Dias, who founded the company with the watchmaker Roger Dubuis. From 2020 the line was redesigned with cleaner lines, in monotourbillon, double-tourbillon and monobalancier versions, and it also underpins the Excalibur Spider series. Almost every Roger Dubuis watch carries the Poinçon de Genève, a certification that covers the entire watch head rather than the movement alone.

The double flying tourbillon goes back a long way at the brand. Roger Dubuis presented the skeletonised RD01SQ, a double flying tourbillon with differential, in 2005, and the earlier Excalibur Skeleton Double Flying Tourbillon used it in a 45 mm pink or white gold case, wound by hand, with a 48-hour power reserve. The later Excalibur Double Flying Tourbillon keeps the 45 mm size, at 13 mm thick, and moves to the calibre RD108SQ: two tourbillons beating at 3 Hz each and a 72-hour power reserve, again under the Poinçon de Genève.

Each version is a small run. The rose gold DBEX0920 and the white gold DBEX0819 with its grey skeleton are limited to 8 pieces each, as is the rose gold DBEX0822 with a gem-set bezel. The DBEX0945, rose gold with a blue skeleton, is a unique piece.

Two other watches carry the Excalibur name. The Excalibur Blacklight Rainbow (DBEX0861) is a unique piece in a 42 mm rose gold case with a skeleton dial. The Knights of the Round Table Chinese Zodiac 24h (RDDBEX0844) belongs to the métiers d'art line Roger Dubuis first presented in 2013, which illustrates the Arthurian legend. This version is a 45 mm rose gold watch with a black dial and jade, limited to 12 pieces.