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I think testing all those tubes would be a good idea. But you should test in a way that normalizes all the tubes. For example, use a simple light meter to set all the tubes to the same or very near the same overall brightness level. Use the same method to make a white screen on all the sets. You would have to use the same equipment on the test of each tube. I think it would also be neato to include some of the 23" and 25" tubes from the 60's through the end of crt production in the tests as well.
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Yes you can call me "Squirrel boy"
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