The Masterpiece collection was introduced in 1992 and marked a significant step upmarket for Maurice Lacroix, showcasing restored or extensively reworked historic mechanical movements assembled and refined in the brand’s workshops in Saignelégier. The Maurice Lacroix Masterpiece Calendrier Rétrograde MP6198 belongs to a pivotal period in the brand’s history, when Maurice Lacroix established itself as a manufacture capable of producing original and sophisticated complications. The reference MP6198 is powered by the Calibre ML 76, a heavily modified version of the renowned Unitas 6498-1 movement. Retrograde complications became a true signature of Maurice Lacroix from the late 1990s onwards. First introduced in 1999, the Masterpiece Calendrier Rétrograde was the brand’s inaugural timepiece to feature this distinctive complication, paving the way for many of the innovative retrograde displays that would follow.