Description
Box with crystilline structures, presumably for research and educational purposes. [Cologne Institute of Mineralogy] 19th-20th c 41 pieces in terracotta, 25 in resins, 1 in wood (sm. defects). Wooden frame.
468
Box with crystilline structures, presumably for research and educational purposes. [Cologne Institute of Mineralogy] 19th-20th c 41 pieces in terracotta, 25 in resins, 1 in wood (sm. defects). Wooden frame.