Steve, walsall's quite a trip for me, but thanks for the tip.
I do wonder if my frame may have been blasted already at some point as the plating under the paint is dull.
I've removed all the paint and while no show pony, is quite adequate for me to build a bike round and have some fun with .
Rummaging through the parts I've got, I can see someone loved chrome; chrome tool box/oil tank, primary chain case cover, timing cover, gearbox cover etc. All now peeling and looking like crap (apart from the oil tank).
Unlike most of the ancillaries though the frame plating is still remarkably sound and hardy - doesn't peel off.
I'm moving my attention to the front end, to get a workable rolling chassis together. All still just in mock up currently.
Thanks all
Tim