Passed my test on a panther 650 sidecar in the sixties cause you could ride bigger than 250 if it had a sidecar and you didn't have to have a crash helmet
I think your right John I've a 57 nh 350 all up and running mag done original patina it's up for around £3000 no takers it's the early ones that make the money
Price reduction on my nh350 really needs a new home ,I just cant start it without a lot of pain in my hips sad to see it just sat in the garage unused,lots of new parts on it and mag just done by tony cooper,,£2950 ..cheers Pete