A leather case containing a large microscope slide with a sample of Dufraycolour film,. The slide has a label which reads 'EX COLL H.A.DADE Dufay Réseau along with a hand drawn image of the slide magnified, along with another slide labelled 'Colour Screen Photography'. Last image made with a microscope for reference only.

Dufaycolor had become available for still photography in 1935 and was manufactured by Ilford Limited. The Dufay film was in use until the 1950's. [Sylvie Pénichon, 2013]

A rare and interesting piece of photographic history.

ca. 9,6 x 8 cm (a "6th plate" case)