well, not that new....had a C12 in 1970 a C15 in mid seventies....A10 after my test.....
but I have come here as I have just bought what I thought was a post C15 250 as it doesn't have the distributor, points in the timing case, but the stamped no. is C15 G 927....so early on in the series of maybe some transitional model....? the various online lists don't mention 'G' I only have the motor and the whole bike was once sold originally and registered in Portugal, where I now live
any ideas you lot..?