Auto Stereoscope © 1905 Mills Novelty.
This stereoscope picture viewer shows fifteen beautiful views chosen by the buyer from thousands of available pictures.
Inside are electrical parts and it could be operated on electric light circuit or with dry batteries.
Auto Stereoscope is able to run 175 times before it needs to be rewound.
Machine's picture.
Collector's Guide to Vintage Coin Machines - Richard M. Bueschel - Page 120