Can anyone please help with information about this event, which I understand was billed as the 5th of its its type (and in a couple of places is referred to as the Champions Rally)? I understand it was organised on the Moet et Chandon estate.
All I have ever seen is a couple of photos including members of the Chandon family and sporting celebrities including Michel Platini, Guy Drut, Jacky Ickx and the photographer Gunter Sachs. It's reported that Guy Drut won, but not what the event was. In the photos I've seen, most are wearing rally jackets and Goodyear caps, which suggests there was some sort of competition, although whether this was motorised or some kind of "Superstars" event is not clear.
Any help, clarification, contemporary articles or advice would be gratefully received!