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Tru Vue Viewers

Model 502
Patented in 1875, this unit presents stereo views from a rectangular slide which moves down as the advance lever is operated.
Film Type
Pat. No. 90564 places this item in the 1869 period. No doubt this item is newer but still an ancient example of three-dimensional photography. Shown with original box, flyer and 2 black and white films-Carlsbad Caverns 1 and 2. This viewer presents images from a film roll- similar to movie film.