Roger Dubuis is a Geneva watch brand founded in 1995 by master watchmaker Roger Dubuis and business partner Carlos Dias, built from the outset on a philosophy of maximum technical ambition expressed through theatrical, visually intensive designs. Every Roger Dubuis movement produced was submitted for the Geneva Seal — the rigorous decoration and finishing standard applied by the Canton of Geneva — making it one of the few brands to have ever applied this standard universally to its production. The Excalibur collection, with its skeletal tourbillon movements, is the brand's most recognized and collectible reference family, featuring architecturally dramatic openworked dials that display the movement as an explicit visual subject. The Velvet is the brand's feminine collection. Roger Dubuis has pursued high-profile collaborations with Lamborghini, which have produced some of the most technically complex and visually extreme watches produced in modern times — including the Excalibur Spider Pirelli, which incorporates actual Pirelli tire material in the strap and movement components. Pre-owned Roger Dubuis references appeal to collectors who prioritize horological bravado and design extremism. DeMesy & Co. in Dallas has been a source for pre-owned Roger Dubuis watches since 1987.