Can any of you bicycle wizards conjure up some info on this bike? I have done a pretty thorough search of bottom bracket serial number and it's within a schwinn 55/56 frame ID, however, looking at schwinn models from that timeframe (or any timeframe for that matter) none of them have a straight downtube. There is no headbadge, no other markings of any kind that I can see. I doubt any of the components that are on it are original. I have reached out to the guy I bought it from, still awaiting response. Doesn't help this bike has been painted at least 3 different times lol. Does give a great patina, though. Thank you for your help