The New England Muscle Bicycle Museum. The motorbikes page 11.

This little guy is a Harley Davidson M50. Made in Italy at the Aermacci plant it is a sporty 2 stroke that shifts through it's 3 grear by rotating the entire left grip and clutch lever assembly.  Pretty dang goofy. It is in nice original condition and runs well except for the oil that pours out of the right side cover when she get hot. I see a gasket in her future...

Below is a 1959 Harley Davidson model 165. These are often mistaked for Hummers, but the Hummers are 125 cc. This is the big brother at 165 cc. It is a two stroke hardtail motorcycle with a sprung saddle and front telescopic forks. This bike has the optional Hi Fi red paint that is a metallic deep red. The wheel size is 18". This bike is restored and everything on her is correct for the 1959 year. She moves right along through the gears and I have had her up to 45 MPH. Click HERE for more pics of the 59 HD.