CoA of the Carolingian Empire

The coat of arms of the Carolinigan Empire consists of a double-headed eagle, crowned by the Imperial Crown and showing the coatfs of arms of it's subdivisions. They are, clockwise from top to bottom:

-Kingdom of Asturias (Iberia)
-Kingdom of Poland
-Kingdom of Bavaria
-Kingdom of Italy
-Order of St. John of Rhodes and Malta
-Papal State of Rome
-Imperial City of Aachen
-Kingdom of Saxony
-Duchy of Illyria
-Kingdom of Bohemia
-Kingdom of Hungary

Center: Kingdom of Austrasia (left) and Kingdom of Francia (right)

Credits: Elements taken from wikimedia commons.