"Kaleidoscope Th. Block 1880"
Kaleidoscope TH. BLOCH in Strasbourg around 1880. Wooden base, sheathed metal tube and rare version with 4 mirrors forming a square and not a triangle. The optical effect is much more spectacular. Missing 3 pins and the frosted has been replaced by celluloid. H: 38 cm W: 40 cm 
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