Sorry to bring this thread back from the dead after so long, but I just picked up a frameset that's identical to the OP's. For anyone who comes across one and is looking for info, it appears to be a Gitane Leopard 2366, according to their 1984 British catalog:

http://www.gitaneusa.com/images/catalog/1984/british/1984-British-catalogue0003.jpg

http://www.gitaneusa.com/images/cata...alogue0006.jpg

Now to clean this thing up and see what I can do with it...