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In the old times before the computer and LEGO era, the children got wonderful things by their parents. Tangible items made by tin or wood, to teach the youth in real handling, e.g. how to screw a bolt in the right way. This DUX construction kit from the 1930's enables to built all typical variants of airplanes, the interesting manual also contains instructions of aerial manoeuvres - fascinating for every boy! BTW, the wings are made from corrugated sheet, which is undoubtedly inspired by the early airplane designs of Hugo Junkers.