Sometimes Ebay is wonderful!

So I thought, OK I will reassemble the magneto. Might as well do it carefully, points look a bit wide. Fitted a new pick up brush I had going spare. Lets just see if there is a spark. Wow...lovely big fat spark! Put it back on the bike. Timed it carefully and the AJS started first kick and revved away happily. Brilliant for an almost certainly dead £50 magneto. (working magnetos sell for north of £250). No guarantees as how long it will work for of course but it might hold out until the other one comes back.