Thanks again to Olivier de l'Atelier for posting these pics of a Baur on the track during the 2012 Youngtimers Club meet. We are not sure of the date or the location yet, but I will post it when I learn it!
UPDATE, thanks to Olivier!
"The location is Autodrome of Linas-Montlhéry (France). And the date was 28 avril 2012."
French Baur on track during the YOUNGTIMERS Club 2012
Thank you, Olivier!