you can find more info at the following site http://www.banque-france.fr/gb/monnaies/main.htm . If you click in "Banknotes that are No Longer Legal Tender", you will get the list of banknotes that can be exchanged and the limit date for each of them. It doesn´t mention coins, but the Banco de España is still changing old peseta coins into Euros, so maybe the french bank will also do it.

And here you have a list of offices all over France : http://www.banque-france.fr/fr/banque/organi/p.htm

Good luck, Covadonga Bilbao - Spain