Mechanical wind-up historical 3D puzzle of Leonardo Da Vinci's fighting vehicle. This is a replica of the tank designed by one of the greatest Italian inventors in 1487 with 360° canons and revolutionary sloped armor increasing its stopping power substantially. This model has a rotating rubber-band mechanism in the lookout and wooden gears inspired by the original invention. Equipped with a stop & go lever. Eco-friendly sustainable material made of FSC-certified wood. Very high precision with laser-cut plywood with amazing details. All-inclusive boxes, self-assembly. No messy glue is required. Clear colorful step-by-step assembly instructions. Very sturdy construction. Can be painted with thin water-based paints, except for the gears, not to obstruct the mechanisms.