Paruna raceset from France

Hi
Heres a electric raceset made by Paruna scientific toys. Some say the set was made before ww2, some around 1947. There seems to be only around 4 sets known to exist. The car is diecast & slotless with 2 brushes in front to make electrical contact. The track is handmade of wood,either brass or copper,& a circuit type board. I dont think very many of these sets were ever made. The track made an oval with 1 side raised so you could add another set & have 2 cars racing.

thanks,
Bernard