RM50 and RM80 magazine advert from Sweden. Click to enlarge. I found this one on the Internet somewhere, unfortunately I don't remember where. According to the ad would Roger de Coster ride one of the bikes if he would be a kid.
RM50 sales brochure (cover page). Click to enlarge.
I found this one on the Flying's
Brochure Page (brochure scan supplied by Graham Orbell). The larger
version is only slightly bigger.