2603409 Crown of Charlemagne (engraving) by Unknown artist, (18th century); Private Collection; (add.info.: Charlemagne, or Charles the Great (2 April 742/47/48 ??28 January 814), King of the Franks who united most of Western Europe during the early Middle Ages, becoming the first recognied emperor in Western Europe since the collapse of the Western Roman Empire. ); out of copyright.