George posted this over on the Facebook page. Really excellent bike with a cool history.

1969 Vostok C364 – Russian made 350cc 4cyl GP bike built under the guidance of Jawa(Czechslovakia) and loosely based on Honda/MV Augusta/Gilera designs that were already outdated by ’69. They made several of these bikes in 350 & 500cc but,didnt really campaign them outside of Mother Russia. Taken by me @ Barber Motorsports Museum ’06

Thanks for that one George