Mid 70s French would have been Tressostar. If a racing bike almost certainly white. Current production Velox Tressostar is not that much like original. If Newbaum is more to your liking it’s equally incorrect or equally correct depending how you squint.
Occasionally I still see original boxes of Schwinn Approved. It is the real thing and even comes in an English dimension roll that is slightly longer than the French packaging. Still, white gets dirty quick, you would need a real supply. The old adhesive seems to stay fresh forever.
If not a racing bike consider shellac. Correct to French, not correct to American builds of French in 70s. Done with cotton twill tape @ $0.25/yard. Lasts forever. White not possible.