Hi Ian16th,
I have tried to contact someone to establish what information they have but it seems that I have to pay and join first when I don't know if it is likely to be helpful.
I have photos of most from my billet and there are only three that I cannot place and I am slowly but slowly sorting out the numbers thing.
I will see how it goes and give it a try if I can find out more from them.
Thanks for you input though - much appreciated.
Don.