Located in Milan, MAS was founded by Alberico Seiling. The company built a number of prototype machines in the very early 1920s, with commercial production commencing in 1922. Early models had 150, 175 and 250cc overhead and side-valve engines with large external flywheels, while production in the 1930s centred around 250, 350 and 568cc side-valve models, along with a 498cc overhead valve Lusso Turismo.
Now 83 years old, the matching-numbers 350cc MAS for sale here is a rare surviving 350 side-valve model which had a claimed top speed of 56mph. It was restored six years ago, it comes from a large Italian collection and it is in very good condition throughout.