Piece of Charlamagne’s throne found
Recently, a piece of what is now the oldest throne was found in Mainz Roman-Germanic Museum. The funny thing is that it was brought there nearly a century earlier, in 1911, having been found during the construction of a clothing store. It was cataloged and stored away, until museum archeologist, Mechthild Schulzerrlamm showed that the object supported the royal arm in the year 790 at the latest, making it older than the marble throne in Aachen which dates from around 800. Aachen was the favorite residence of the emperor and served as the principal coronation site of Holy Roman emperors and German kings from the Middle Ages to the Reformation. All that tradition upstaged by an armrest, a left armrest at that.

Mainz’ throne may be older, but Aachen’s is actually a throne.
A Place to Sit for German Kings, DW-World.de.