Columbia subject headings:
Numismatics, Papal.
Seals (Numismatics)
Seals (Numismatics)--Germany.
Harvard subject headings:
Numismatics, Papal.
Seals (Numismatics)--Germany.
Seals (Numismatics)--Medieval.
Princeton subject headings:
Numismatics, Papal.
Seals (Numismatics)--Germany.
Seals (Numismatics)--Medieval.