Hello Peekaboo,
I think we are now 100% in agreement, somehow I misunderstood one of your post, sorry for that.
Yes, I also think that the D. Thiry car, that was at the beginning mostly white, (the Wissembourg hill climb photo should have been taken in 1970) and that later the car become more green, (i.e.: at the "Grand National" victory. This car (the R), carry the plates 3287 QJ 67, and also IMO, is not the same as the the "Blue" one. Btw, to my eyes, the "Blue one" do not looks like an "R", and note also that it does carry a different plate number, but still in the "Bas Rhin" (it can translate as "Lower Rhine") that is part of a French area called "Alsace".
Like you wrote, my confusion came from the post where you mention “D. Thiry, rallye du Franche Comté” and next to this mention, you have “by 72, D. Thiry had another car…” ..and then come the (very nice) photo, that now, it is all clear, do refers to “rallye du Franche Comté” comment.
Btw, I did not know about this great photo, thanks to have posted it there.
For your info, the “Franche Comté” is another area of France, that touches Alsace and also Switzerland, and includes the Jura department.
Another “hint” : About French license plates, at that time, I remember that painted license plates was very common ..and legal in France !
(I even have seen French plates made using chalkboard..)
So, this is not something special at all. True that today, with Europe, it is not the same anymore.
Also, the last two digits, normally separated in the right side, are the number of the department (State). In France, each department (or parts of a department) have a fixed two digit number, and you mostly use these two numbers like in the USA we use the two letters for the States.
(So you have this way to tell from which department is a license plate).
Back to the R from D. Thiry, at this point there are only guesses that this was 001R. It would be great to have more facts in this assumption.
I also recently understood that 001R is no longer in the USA, but was then in Austria, and now in Switzerland since few days. But, it is true that I do not know if this is the “same” 001R that is known to have been restored in the East coast, ..or another one !!!
For sure, ..more to come !