In 1959 Dr. Bela Julesz
created a stereographic image by displacing a portion of a picture of
randomly arranged dots. In 1959 Christopher Tyler determined that the
same effect could be created using a single random dot image. This
became the basis for the MagicEye images and other random dot
The stereographic images can be seen by two techniques.
In the first, place the stamp very close to your eyes and slowly move
it away. Allow your eyes to focus gradually behind the surface of the
stamp. The three dimensional image will appear. In the second, hold
the stamp about twelve inches from your eyes and let your eyes go our
of focus. TThe image will appear.
The two stamps from Guernsey display stereographic images similar
to the normal images on each stamp.
To see the stereographic images focus your eyes behind
the image, the image will appear to be in front of the background.
Another way is to allow your eyes to cross slightly and focus in front
of the image; then you appear to look through the background to see
the image. It may take a bit of persistence, and a bit of time.