Title: Super egg.
Publisher:  Henning Glahn, Copenhagen, Hamburg, London , 1966,
Seller ID: 94513
(Super Egg). The super egg. (Copenhagen, Hamburg, London : Henning Glahn), n.d. [1960s?]. Pp -30,(2). 16mo, green stapled card covers. “The Super-Egg is a sculpture, a plaything, and an amulet. It is a spatial form of super-elipse, which is an exact curve related to both the circle and the square.” (p. 3). The shape was popularized by Danish poet and scientist Piet Hein(1905–1996). Supereggs of various materials were sold as novelties or "exe cutive toys" in the 1960s. Rules of the game are given in the following language : English, Danish, Dutch, French, German, Italian, Spanish, Swedish and Japanese. Spine sunned, else very good. The instruction booklet only, noSuper-Egg included. 20.00