Thanks Simon, I agree about the changes through the short years as they progressed along. My main observation was the hardware, the studs and other parts on the later single I am doing show very clearly that the surface finish was black and not cadmium or something of a silver like finish. I bought a plating kit that I have tried on the original and the new steel wheel hubs, plus one of the original 1/2 " diameter engine plate studs which I polished up in the lathe first. I will send some pictures on to Stephen and he can post them on here to show the results........Came up very nice, looks very authentic and the blackened stud with cadmium plated BSF nuts on either end looks superb. Cheers...........Greg.