What did our engineer Roger want to explain with this particular item? Once again he has integrated his knowledge into a high-quality aluminum object and in our Puzzleshop in Palma you have the only opportunity worldwide to look at his designs up close, to touch them and then to think about the solutions! This time, the not-too-difficult task is to get the horizontally stuck propeller turning. Absolute collector’s item, increase in value, as with all his designs, almost guaranteed.

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