Originally Posted by
dbakl
Off the top of my head, for a production frame I'd suggest a high-end LeJeune or Motobecane Team Champion. As for French, if you can find something pre bike boom, should be pretty nice!
I have a 1979 Team Champion that's French threaded, although the wiki page for Motobecane says they started using Swiss in the mid-70's. I've never seen a useful/credible timeline for which models used Swiss during which years, but if you're looking at Motobecanes you should take a careful look at the threading; something that might be difficult if you're shopping online auctions.