Roger Dubuis Excalibur Chronograph

About this reference

The Roger Dubuis Excalibur Chronograph EX42 in stainless steel was produced during the mid-2000s, representing the era when the manufacture’s founder was still active in the company. Collectors prioritize this reference for its RD78 movement, an in-house, integrated column-wheel chronograph caliber featuring a micro-rotor and the Poinçon de Genève certification. The 42mm case is characterized by a triple-lug design and a notched bezel, while the dial typically features oversized Roman numerals and a bi-compax layout. Production for these early steel models was limited, often restricted to 280 pieces per variation. On the secondary market, these watches generally trade between $8,000 and $12,000 depending on condition and the presence of original documentation. A notable production detail is that these movements were among the first high-complication calibers developed entirely in-house by the brand before its acquisition by the Richemont Group.