Awesome.It does not appear to be a Hermann's tortoise (T. hermanni hermanni) which is the ONLY native species of tortoise to France, rather it looks like a Greek tortoise (Testudo graeca ssp.) which are introduced but there are only scattered reports of this. Please post good photos of the animal wetted down so I can properly I.D. it for you. I need to see top and bottom. It may be an escaped pet. Have you contacted anyone over at the Gonfaron Tortoise Preserve?