i bought a RARE Derbi GP1 2 Stroke Scooter (imported) - YouTube
Switch Left Motorcycle Piaggio Derbi GPR-GP1 50cc/125cc. (New) | eBay
File:Derbi RAN 50cc 1972.JPG - Wikimedia Commons
Piaggio 101 Octane Parts - Replacement Cylinder Kit 50cc for Aprilia, Piaggio, Derbi D50B0 Moped & Motorbike Engines | Scooter Parts | Racing Planet USA