Magic Eye 3-D Optical Illusion Cards: Hold this postcard RIght Up To Your Nose and Very Very Slowly pull the postcard away from your face. Look THROUGH the image. Try not to blink and a 3-D illusion will magically appear!
unused postcard printed in 1994
this works on the computer too! I put my face up to the screen and pulled away and saw the image in perfect 3-D. The further you pull away, the deeper the image. Click on the picture once to make it bigger on your screen first if you are going to try it.