A CASED SET OF POLISHED ROCK SPECIMENS
Bohemian, late 19th early 20th century
48 polished marble, metamorphic and igneous rock samples, rough on their reverse sides, many with manuscipt paper number labels, each in 1½-inch square compartment; sliding wooden cover.
14in. (36cm.) wide
A CASED SET OF POLISHED ROCK SPECIMENS
Bohemian, late 19th early 20th century
48 polished marble, metamorphic and igneous rock samples, rough on their reverse sides, many with manuscipt paper number labels, each in 1½-inch square compartment; sliding wooden cover.
14in. (36cm.) wide
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