Hello thanks for including me in the group. I have an old claud butler ( given to me 2nd hand in 1974. I’ve restored it twice over the years and about to embark on the 3rd restoration. In my old age I’ve become very interested in trying to identify how old the bike is. I’ve looked at various CB frame number forums but really struggling as my frame number doesn't appear to match up. The frame number ( under the bottom crank) is 1258290. Any help or guidance will be very welcome. ( I’ve attached a picture) Thank you in advance. Howard