Set of Nine Geometric 1920s Cardboard Science Classroom Crystal Models
Date: early 20th Century
PRICE: $ 2,500
Dimensions: H 19cm W 24cm D 35cm
Nine large brown speckled cardboard crystal teaching forms.
These crystal models used to be used as teaching material at school, to show students the difference in crystal shapes.
Crystals are commonly recognised by their shape, consisting of flat faces with sharp angles.
I also sell 5 Bakelite ones, they'd make a great decorative collection together.
the largest is 35cm x 24cm x 19cm (13.8inch x 9.5inch x 7.5inch)
the smallest is 21cm x 21cm x 14,5cm (8.3inch x 8.3inch x 5.7inch).
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