Are you really sure it is the Convincer Janne ? I believe it was repainted from the original blue paint to the way it looks in the attached pic. I think this was done in 1979.
When was your pic taken ? The Sponsors,"Comfort Custom" on the doors and "Roffes Bilbärgning" on the rearfenders are the same though. And it looks like the lower part of the scoop is the same to.
