Columbia subject headings:
Numismatics--Byzantine Empire.
Numismatics--Russia (Federation)
Seals (Numismatics)--Byzantine Empire.
Seals (Numismatics)--Russia (Federation)
Harvard subject headings:
Numismatics--Byzantine Empire
Numismatics--Russia (Federation)
Seals (Numismatics)--Byzantine Empire.
Seals (Numismatics)--Russia (Federation)
Princeton subject headings: