Yamaha Y AS 1 (& AS 2) 1968 - Moto Passion - Moto Collection François-Marie DUMAS
Yamaha AS1 1969: First start and test drive - YouTube
SPORTSBIKESHOP - The latest restoration on Ian Gromett's Yamaha AS1 started with a seat bought from an ex-Grand Prix rider in Sweden. Ian bought this bike from a mate in 1990 to