Jeunet

http://decatur.craigslist.org/bik/3882191956.html
1970s Jeunet road bike - $50 (clinton)

Have for sale a vintage 1970s Jeunet ,cool old French bike from the early 70s, needs tires , has a working tire pump still on it , all gears shift and work ,front brake cable needs some work ,still moves. Back brake works as it should. these bikes bring good money on e-bay, needs restored ,but with a little work could be road worthy, $50.00 or best offer, send contact info and I will get back with you.

The first picture is a good example of how not to photograph a bike for sale.  But anyway, if you were looking for practice at stripping down a bike for a good cleaning and generally different ways you can bring a bike back with minimal expense this would be a great candidate.  Also if you want to tinker, frakenstein or otherwise butcher and experiment on a bike, this is the one.  These were better than the average bear bike boom models and it's encouraging that it came with toe clips and cotterless cranks.  It isn't a sure thing, if the rims are rotted out or the bottom bracket/headset doesn't turn you'd have to put more money into this than the beater it turns out would be worth, but otherwise it's complete and cheap and can be treated as such. It would probably be especially good if you want to mess around with painting.