Piatti were scooters designed by Vincenzo Piatti and produced from 1956 to 1958.
It was a curious-looking machine with the mechanics hidden under the body, so that service was carried out with it laid on its side. It had a 124cc two-stroke engine and three-speed gearbox in-unit with the rear wheel. The assembly pivoted to provide the rear suspensiion and went under the pressed-steel frame of inverted-bath form.
This short-lived make was built and sold in the UK by Cyclemaster.
The Piatti scooter has the dubious distinction of being, in the words of Bob Currie (author of Great British Motorcycles of the Sixties), "the worst scooter ever perpetrated."