Hey all, I just picked up this Rupp, with original tank and seat, but I can't find a specific model that fits it. So far I've seen multiple different bikes with the same frame and tank design, like the C-250, Special, and Banchi, but all of those seem to have either a rear disk or rear drum, but none with this frame and the rear scrub brake which was stock on some other models. Frame ID is 51701. I'd say its somewhere between a 1968 and 1970