Puzzle Details

Weight: 138g
Size: height 8.7cm, diameter of top/bottom 5.6cm, diameter of rings 6.2cm, ring height 2cm

Nintendo, 1980

Keychain:
Weight: 15g, 28g with box,
Size: height 3.5cm, diameter 2.5cm

Surprisingly the rings of the keychain do not stop in the state where they can be moved up/downwards, but exactly between two of the locations. Either this is wanted to avoid unnecessary noises and movements for the keychain or it is an irregular design.

One of the keychain barrels comes from the collection of Dieter Gebhardt.