International general-oriented
clubs and associations
Fédération Internationale des Véhicules Anciens
http://www.fiva.org/
"FIVA’s primary objective is to encourage the safe use of self-propelled, mechanical vehicles, greater than twenty five years old, on the roads for the benefit of both their owners, dedicated enthusiasts and the general public.
[...]
FIVA is also concerned with the preservation of historic vehicles, which are accepted as being an important part of our industrial heritage and attempts to catalogue as many historic vehicles as is possible through the FIVA Vehicle ID card, which is administered by its Technical Commission."