The Air Inter flying club has (used to have) an ASH-25 registered as F-CHIT
A Breguet 901 is registered as F-CCCP, still airworthy after almost 50 years (
pic).
Rumor has it that it outlanded once in Switzerland and was mistaken for a soviet glider for a few minutes.
Some other ones (taken from
http://www.teaser.fr/u/pbrugier/f_f.htm)
F-CAKE CASTEL 301S
F-CEXY GROB 102 ASTIR CS 77
F-BUTT PIPER PA.34 200 SENECA