Columbia subject headings:
Gems, Ancient--Catalogs.
Gems, Classical--Catalogs.
Gems--Private collections--Switzerland--Bern--Catalogs.
Merz, Leo, 1869-1952--Art collections--Catalogs.
Rings, Classical--Catalogs.
Rings--Private collections--Switzerland--Bern--Catalogs.
Harvard subject headings:
Cameos--Catalogs.
Gems, Ancient--Catalogs.
Gems, Classical--Catalogs.
Gems--Private collections--Switzerland--Bern--Catalogs.
Merz, Leo, 1869-1952--Art collections--Catalogs.
Rings, Classical--Catalogs.
Rings--Private collections--Switzerland--Bern--Catalogs.
Princeton subject headings:
Gems, Ancient--Catalogs.
Merz, Leo, 1869-1952--Art collections--Catalogs.
Rings--Catalogs.