I recently bought a very small camelback frame (about a 17 in seat tube). It fits 26 in wheels but the tires can only be around 1.75. It has an integrated seat clamp on the seat stays like the old rollfasts and has a thru axel designed fork. The badge rivet holes are very far apart and looks like they fit a schwinn badge. The serial number stamped on it is A225. Any ideas on what I have??