Results for Vintage 3day event at this years ISDE are interesting. Pretty clearly held in Spain
6 each Bultaco & Husky
5 each Montesa Ossa & Puch
4 each KTM & SWM
3 Honda
2 each Maico, Cardel, Cagiva, Fantic & Portal-Ranger (never heard of these)
1 each Kram-It, Can-Am, Kramer, Suzuki, Kawasaki, Rieju, Simonini, Moto Guzzi, Peugeot
and forgot the 1 Triumph
all results here
http://fim-isde.alkamelsystems.com/