Mackenstein “Chromoscope cabinet viewer” for autochromes
aMackenstein "Chromoscope cabinet viewer" for autochromes. Featured in Mackenstein's catalogue: Elegant apparatus made of Mahogany, for looking at 9 x 12 cm format colour views........ a single turn forward of the handle, and one back is enough to change the view..... Quality construction. See period document attached.
Mackenstein "Chromoscope classeur" pour plaques autochromes