Asw French Coins 20th-Century Pre-Euro

Try CurrencyDebasement's silver page.

According to that,there's also the 100 francs from 1982-2000, though like the 50 francs that preceded it, it did not formally circulate.

Sap: they were circulating, as much as the current 10 / 20 / 50 / 100 / 200 / 500 euro coins do :)
You could pay with them, they were legal tender, but in fact yes no one was using those.
A bit like the 2 dollar coins I suppose.

I only saw once a 100 franc coin in a café, while talking to the bartender - a granny did pay her mill using this ...
They were also given by some grandparents at christmas - and most of the time they were kept safe, unlike regular bills which every children would gladly use to buy stuffs :D