 The term derives from the French term "émail en ronde bosse" ("enamel in the round"); however in French "en ronde bosse" merely means "in the round" and is used of any sculpture; in English "ronde bosse" or "en ronde bosse", though usually treated as foreign terms and italicised, are specifically used of the enamel technique, and in recent decades have largely replaced the older English term "encrusted enamel".The technique rapidly reached maturity and produced a group of "exceptionally grand French and Burgundian court commissions, chiefly made c. 1400 but apparently continuing into the second quarter of the fifteenth century".These include the Goldenes Rössl ("Golden Pony") in Altötting, Bavaria, the most famous of the group, the Holy Thorn Reliquary in the British Museum, the "Tableau of the Trinity" in the Louvre (possibly made in London), and a handful of other religious works, but the great majority of pieces recorded in princely inventories have been destroyed to recover their gold.