Three-colour viewer An Ives-pattern Kromskop-type viewer (incomplete) , mahogany-body, internal mirrors, red, yellow and blue filters, the back stamped Made in Germany - 16½ inches (42cm.) high ; a quantity of single negative and postive three-part monochrome glass plates, three-part stereoscopic negative and positive glass plates; a stereoscope and various scientific apparatus(a lot)
Three-colour viewer An Ives-pattern Kromskop-type viewer (incomplete) , mahogany-body, internal mirrors, red, yellow and blue filters, the back stamped Made in Germany - 16½ inches (42cm.) high ; a quantity of single negative and postive three-part monochrome glass plates, three-part stereoscopic negative and positive glass plates; a stereoscope and various scientific apparatus(a lot)
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
