Very nice photo's! The sidecarbody is manufactured by Bernadet, a French company. This type of sidecar bodies was also used on some French Army Gnome Rhone AX2 combo's.
Yes, Jan sent it me at the time, but they are official pictures from the ECPAD archive, and if anyone wants them, its a lot cheaper to order them there! I already had them for years, but 85 (or 65) is just too much for postwar pictures.
I had another theory on the higher springs, but it eludes me now.