Check the listing for details. Da Vinci Helicopter. Condition: New. Listed at 75.00 USD. A working model, known as the Da Vinci Helicopter. Based on his original ‘ aerial screw’ design in the late 1480’s. It requires a USB cable ( not supplied ) which can be connected to a laptop or power bank or similar. The model is fully constructed and ready for display. Measures 10” x 4.4” x 3.7”.
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