Click a thumbnail to see its larger version and description.
A yellow version with identical markings also exists. There is also a version with "Columbus' EGG" written on it.
The Columbus Egg consists of an upper and a lower half. On the upper half is a little window and a slider. The slider can take one of three positions.
In the window you can see the edge of 5 parallel discs. Each of the five discs has a red edge which is as wide as the window. The lower half can be turned clockwise. According to the position of the slider different discs get turned.
The task is to turn the discs in such a way that only the red edges are visible in the window. In case of success a small weight is shifted so that the Columbus Egg stands upright.
The puzzles exists in different colors. Confirmed colours are: White, red, blue and yellow.
Courtesy, The Lilly Library, Indiana University, Bloomington, Indiana
If you're looking to buy, eBay is the one place you can find almost anything... if you're willing to wait for it, then pay the price!
Thank you to the following people for their assistance in helping collect the information on this page: Carter, Geert Hellings, Jan Nyegard, Zzupler.
Found a mistake or something missing? Edit it yourself or contact the moderator.