The listing, 21 Unused Vintage 1994 Stereogram Postcards Post Cards has ended.
Up for bid are 20 Stereogram postcards in excellent condition, They measure 6.5" x 4.75". I found these at a church sale, and although I have dealt with postcards for many years, I had never seen these!
These are really fun! You hold the card right up to your face (picture side), and very slowly move the image away from your face. Most of them you can't see what the object is, until you do this!
The image might be blurry at first, but your eyes will gradually find the stereogram's focal point, and the view will appear 3-dimensional. Sometimes when there appeared to be two items on the card, suddenly there will be three!
I tried it with all the cards, and it really works! There is an explanation of the image on the postcard back. Smoke-free items,