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The top items from the world-famous Meffert 3D puzzle range! The perfect logic trainer for children and adults. All Meffert items come in attractive gift packaging.
Marble on Marble - 20 shiny marbles and 10 different colors in pyramid shape. Twist the colors with the click mechanism until you can no longer see any order. The subsequent goal is to get 10 different colors on each side of the pyramid.
