Exceptional and important standing stereo viewer to view 9 x 12 Autochrome. Designed to take 9 x 12 trays of slides Mattey. Autochromes are mounted in frames mat 15 cm. The construction is high quality Cuban mahogany flame. There is a large adjustable rear mirror to direct light toward the view. The viewer has 50 views 9 x 12 format representing the family and friends of Fernand Ducretet around 1910/1920. Provenance: The family of Eugene and Fernand Ducretet. Ducretet was active during the early years of wireless transmission, the start of broadcasting. He established the first radio link in France in 1898 on November 5, when it broadcast the sounds of the Eiffel Tower to the Pantheon. Pictures by his entourage. This is an object of unique character, worthy of a museum. Dated between 1910 and 1920.