I didn't see the hint in Reply #62 until today. I recognized it as a Europa by Mabille and went looking for a Mabille circus trailer. This eventually brought me around to finding the Paris-Beaune brochure, but I'm still not sure if the Europa is produced by Mabille under license from Paris-Beaune, or the other way around, or licensed by another entity, or something else entirely.
Anyway, thanks!