Columbus Egg / Super puzzle "The X"

Columbus egg / Super puzzle "The X" is an egg shaped puzzle with 5 internal metal rings.

The 5 rings need to be aligned to allow th egg to stand upright without its black stand.

The puzzle is fully analyzed on Jaaps puzzle pages, where is is described as follows:

In the side of this egg there is a little window through which you can see the edge of 5 parallel disks. If you rotate the bottom third of the egg clockwise, some of the disks rotate. There is a sliding button on the side of the egg, which influences which disks will move when you turn the bottom part of the egg. The disks each have 10 positions, and one of these positions shows red through the window, the others white. The aim is to make every disk show red, and when you do that a weight inside the egg is unlocked. This weight then allows you to stand the egg upright.

It is also described in the twistypuzzle museum. 

The egg is 8 cm high and 6 cm wide, including stand it is 10 cm high.