Originally Posted by Schreck83

339052 would be 3rd day of the 39th week in 1970, frame #52.
The brakes look like MAFAC Competition, rather than Racer. It's great that you have all of the touring bits - fenders, racks, etc. Get a set of wheels and a new saddle and you'll have a rare French tourer. Definitely replace the rear derailleur.

Look at the 1971 catalog here:
https://labibleduvelocataloguesgitane.blogspot.com/