Plastic casts of crystal models

Unsigned, first half 20th century
58 transparent light orange casts of crystal models. Dimensions between 3 and 7 cm. Some of the models were numbered which allowed them to be identified as casts of a set of Krantz wooden crystal models. The original Krantz models belonged to the set of 150 models, arranged by C. Hintze, fully described in their catalog 8a 2nd ed. [1897] and mentioned in later catalogs (e.g. catalog 29 2nd ed. [1936] on page 12).

collection R. Dedeyne