One thing to know before you buy an old junker is to look out for cottered cranks, these can be very difficult to work with and repair due to my last experiences on an old peugeot from the mid 70's. If that thing is loose in the bb stay away IMHO, i got lucky because my dad is a machinist and that guy can make any part work. if it's legit then go for it! On top of that the previous owner did not know how to get the cotter pins out and practically destroyed them, The hardest part about that was actually finding the right size cotter to fit in my crank. The LBS only had some that were just barely to big so my dad had to grind them down to fit perfectly. Just keep this in mind next time you out picking.