I'll guess the early to mid '60s, more or less; these various vignettes may come from widely different times. When the hardcore age began they didn't make too many of these solo strip-and-seduce films any more (unfortunately). Not surprising this comes from Europe; you couldn't have sold it here in the U.S. before the early '70s.
You re wrong, the second one is french , Valerie Lefebre, played in wonderfull Manu Payet movie in the 80's " La doctoresse a de gros seins"...never saw a more exiting movie ...Watch it !!!
The last one is late 80's. She did a lot then. I have not seen anything from her since then. Some of the others may be 50's or 60's. None are French. French women did not shave under arms until the 80's.
No need for silicones to be a pretty woman! Today's women with fake tits do not enchant me.
But I loved those boobs!!