Sounds like a nice find. Too bad the drivetrains are missing. I believe '74 was the first year for the Grand Jubile in the US. The catalog specs call for a Pivo bar and stem. Maybe the bikes you've got were bought overseas and brought in. Here's a link to a review of the bike when it was introduced.
http://www.velo-pages.com/main.php?g...geViewsIndex=1