95/365 ~ Stereoscope - The Original 3D
"An optical instrument with two eyepieces used to impart a three-dimensional effect to two photographs of the same scene taken at slightly different angles."
My grandparents had one of these that as kids we enjoyed looking at all the cool old pictures. The oldest grandchild got theirs (which wasn't me). This is one I got at an antique show as a reminder of the past. Bought a few cards at the same time. This was a few years before we moved to WI. Ironically, one of them is of a WI state park that we now live close to.
365 Days in Colour. 25 April - Brown