Colour is right for the Tour de France, here's a couple of scans from my Gitane brochure from around that time period.

"specifications subject to change..." never had so much truth as when it came to Gitanes of the bike boom era! You can find TdF models built with 3 different dropouts all within a year or 2 of each other, as well as different stay cap "treatments"...vive le difference...but I'd say this is a TdF without doubt, just one you have to use with a "claw" style RD, which actually might be seen as a plus!

Yeah...I've seen them with Simplex dropouts, Campy dropouts, Huret dropouts. The no-hanger type is a first for me. That's what made me think it's from an older bike.