I acquired a '57 Inter and have since restored it. The bike was sold in London when new and at some stage ended up in Australia. The engine and frame have matching numbers (engine 71791 M11, frame 11 71791). I have had the head off and found that the inside was ceramic coated and the bore was standard with no sleeve. All the rest of the bike is very original. I would like to know if anyone knows any history of this machine. Peter
I think the Club has an official Officer who may be able to help!