I doubt that it's genuine. Those rear dropout joints are anything but the pinnacle of perfection, and the derailer cable braze-on is a cheap piece of stamped steel; common on French bikes. I don't see any coins in the fork either (though that's not to suggest all Gios have them).




This is a much later announcement (note the reference to their "compact" rear dropouts), but may be valid for this bike:



-Kurt