No, they were all on French plates. I am wondering if the sons didn't realise the value of them as they were not exactly the most classic of classic cars, also I wouldn't be at all surprised if they weren't pretty well wedged up anyway and just didn't need the money. They all needed recommisioning so a bit more like barn finds than drivers. But buying and selling cars in Frogland involves a lot more paperwork than in the UK. One and only car I ever bought over here back in 1978 it cost me 500 francs just to change ownership! The car only cost 2500 francs! I was shocked to say the least.
Thing with kit cars is that in order to sell the kits the manufacturers had to design ones that would accept parts from common donors, so they used Cortinas, old RWD Escorts, Triumph Heralds/Vitesses, Aircooled Beetles, Jags, then Sierras, BMWs, etc.
After a while they struggled to find RWD donors, so things got a bit trickier, and pricier. Or they used FWD and designed mid engined kits, so they could put the engine at the back!
I'll shut up now as I can get very boring about all this!