This item is still in production.

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Year: 1970

Manufacturer: 

Model: 

Designer: Bruno Munari

Dimensions: 6 1/8 x 6 1/8 x 1 3/8″ (15.5 x 15.5 x 3.5 cm)

Ages: 

Made in: Italy

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Plus and Minus is a wonderfully inventive and imaginative visual game created by Italian masters Bruno Munari & Giovanni Belgrano

It consists of 72 cards, with 48 transparent ones that can be superimposed to compose complex images and stimulate a child’s creativity.

This game is still in production at the following online stores:

Moonpicnic