Im used to restoring old bikes and have had my share of some pretty nice rides. Ive checked the major stuff like straightness of frame, welds and such. The frame is very light and the welds look really clean. The forks def do not look right. And by the look of the stickers and tape on the frame.....my guess would be that it couldve been stolen at some point years ago by some kid and just tacked up enough to be under the radar. The rim on the back is aluminum 27" . I doubt that a rim that size would have fit on the front forks. The idea of a "funny" bike is very possible, but not the intentions I would have for it.

Any idea which manufactuer would have a ser # start off with an HZ ?