Stereo was designed by Karlgeorg Hoefer and built with an unusual understanding of the play of casual form in building a fictional third dimension. A powerful exercise by a master of figure-ground relations, Stereo can fool the eye at any size, defining shape and suggesting depth. Its playful success brings laughter to the lips of admiring users.

Stereo appeared in 1968, and was seen by Tobias Frere-Jones, who revived it digitally.