I don't have a degaussing coil but we can try the high wattage soldering gun method and see what happens. It also appears, by your screen shots that the green gun isn't up there with the other two. The CR-70 will take care of that without hurting the tube, 8v for a while should wake it up. The screen looks pretty uniform without big blotches so the purity looks decent judging by your pictures, I'll bring that solder gun anyways though.
I don't have much room but I'll see what I can fit in. I'm headed to a lady's house in Milwaukee to pick up three sets on Sarurday. One appears to be a late 60's color set, a late 40's 16" or so console roundie, and the third is a mystery set that I haven't seen yet. Three sets for 15 bucks, I don't need to see it

the other two are good enough. I also like the suspense, God (and the lady

) only knows what it is. I'm also probably getting that '75 Chromacolor II. It's been a tv explosion at my tiny house lately. Looks like I gotta throw out more crap.
__________________
My TV page and YouTube channel
Kyocera R-661, Yamaha RX-V2200
National Panasonic SA-5800
Sansui 1000a, 1000, SAX-200, 5050, 9090DB, 881, SR-636, SC-3000, AT-20
Pioneer SX-939, ER-420, SM-B201
Motorola SK77W-2Z tube console
McIntosh MC2205, C26