IIRC, vehicles registered prior to 1997 may not circulate in Paris except at night and the weekends. There are exceptions; emergency service and military vehicles, and cars which are registered (on their registration document) as collectors cars .
Thanks Giles, that confirms what I thought was the case. And, according to German Wiki, see below, no eco vignette required (or issued) for cars older than 20 years. Knowing I can make a foray into Paris after Le Mans is very helpful. Getting out again on a weekday could take some planning, although I have Austrian "historic" registration which perhaps could be argued is the same as collector. Although my French is not up to arguing with a
So Quentin YES! Road clear for Le Mans Classic
Keine Vignette erhalten Pkw mit Euro 1, ohne Euro-Norm oder einer Erstzulassung vor dem 1. Oktober 1997. Für Nutzfahrzeuge gelten allgemein strengere Vorgaben. Eine detaillierte Aufstellung, unterteilt in Fahrzeugkategorien ist auf der offiziellen Website[3] zu finden.