Columbia subject headings:
Harvard subject headings:
Coins, Byzantine--Early works to 1800.
Coins, Roman--Early works to 1800.
Emperors--Rome--Early works to 1800
Holy Roman Empire--Kings and rulers--Early works to 1800.
Numismatics--Byzantine Empire--Early works to 1800.
Numismatics--Rome--Early works to 1800.
Princeton subject headings:
Emperors--Holy Roman Empire.
Emperors--Rome.
Numismatics--Byzantine Empire.
Numismatics--Rome.