This is a '74 MX100A from USA or possibly Canada. I bought this bike as a project in February 2007, it was white with a blue frame and was in fairly standard condition, but it had obviously been clumsily re-painted. After scouring loads of MX100 photos, each of which seemed to have a different paint scheme!! I decided to go for a '70s Yamaha racing "speed-block" look, which I painted on using aerosols and masking tape (no decals). It looks pretty good now, and is in great condition for a 33 year old! I just have a few small jobs to do to finish it off, then I'll be starting work on something else!