Unidentified photographer / artist 1860s-1870s Alethoscope Day/Night photographic view of the Arch of Constantine, Rome. Stereographica - Antique Photographica Courtesy of Bryan and Page Ginns (#17 / 38)
Measures approximately 12" x 16". The Alethoscope was made and sold by Naya in competition with Carlo Ponti's Megalethoscope in the 1860/70's. These views differ from the Megalethoscope views which are curved. The Alethoscope views are flat and much scarcer.
