After seeing your center picture Bob, I tend to think the crt has seen better days. Ben I don't have tesla coil tester but I bet your correct about it being a dud.
I find it difficult to get a good picture of the purple glow in the crt gun. I'm still going to recap the chassis and try the crt just for the experience. The last photo is with my camera set for nightime exposure, for more light.
Ed
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