Six identical lenticular 3D images can be pushed out from this postcard sized sheet. www.postcard-online.com. Copyright L.M. Krtenvertrieb.
Other Ephemera
optical
Viewing stereo photographs was hugely popular just before and just after the turn of the 20th century. These cards were made for an international market, judging from the use of six languages on the reverse of the cards. In total there are 66 photograph pairs relating to Italy. These stereo pairs can be viewed in the Underwood & Underwood stereo viewer, Ref. no. N1101. These were a gift to John and Anne Davenport from Harry Carson (real name Pat Swain) who lived in Norwich.
The clever design allows it to be folded flat and sent through the post as a postcard.
The subject matter is mainly puzzles, optical illusions or magic. Two illustrative pages are shown, along with the album itself.