Portrait by Albrecht Durer, 1513
This famous panel painting of Charlemagne depicts him as the founder of the Holy Roman Empire, so he bears the imperial regalia which had accrued in the imperial treasury in the Middle Ages: sword and orb of empire, and the famous Ottonian crown now at Vienna. The arms above him include the arms of France ('France modern', in use in the sixteenth century) and the (German) Holy Roman Empire. See a discussion of this portrait at the great Hungarian 'Web Gallery of Art' site here. Now at Germanisches Nationalmuseum, Nurnberg.