Bryan -
I have a 23EGP22 in my Admiral of recent posts. The tube is a little darker than modern sets, owing probably both to age and the tinted safety glass. But it still produces a decent (at least to my eyes) color picture. When I did the cataract removal on that set, I wasn't expecting much from what I'd read about that tube and from the way the picture looked through the cataract. But I was pleasantly surprised by the way it turned out.
Now if I ever get my '67 Admiral fixed (new damper tube to arrive today!
) I'd like to set them up side by side and make a comparison. Its tube is a 25SP22 - still tinted safety glass but the picture looked a lot better the last time I had the set running.
Jim