FOCUS ON: Super-egg Designed by Piet Hein Stainless Steel

Vintage stainless steel Super-egg designed by Piet Hein in 1965. This novelty toy was manufactured circa 1966-1970. Comes with the original leather pouch, but is missing the tie strap. Also includes numerous Super-egg documents dated 1966. No original box.  Price: $48

In geometry, a Super-egg is a solid of revolution obtained by rotating an elongated super ellipse with exponent greater than 2 around its longest axis. It is a special case of super ellipsoid. Unlike an elongated ellipsoid, an elongated Super-egg can stand upright on a flat surface, or on top of another Super-egg. This is due to its curvature being zero at the tips.

The shape was popularized by Danish poet and scientist Piet Hein (1905–1996). Super-eggs of various materials were sold as novelties or "executive toys" in the 1960s. A 1-ton Super-egg made of steel and aluminum was placed outside Kelvin Hall in Glasgow in 1971, on occasion of a lecture by Piet Hein.