Columbia subject headings:
Harvard subject headings:
Coinage--Italy--Orvieto--History--To 1500.
Coins, Italian--Italy--Orvieto--History--To 1500.
Mints--Italy--Orvieto--History--To 1500.
Princeton subject headings:
Coinage--Italy--Orvieto--History--To 1500.
Coins, Italian--Italy--Orvieto--History--To 1500.
Coins, Medieval--Italy--Orvieto.
Coins, Renaissance--Italy--Orvieto.
Mints--Italy--Orvieto--History--To 1500.