Here is a close up of the drive side dropout and the Vitus stamp in the hanger.

http://i378.photobucket.com/albums/o...otos/Conti.jpg

I spoke with a friend who lives in France and he has a Gitane of the same vintage (and Super Vitus 980 tubing) that sports a full decorative Shimano 600 gruppo with French (opposite side cable input) calipers.