I fixed up a CTC 10 which look just like yours except in had a piece of glass on it to protect the face of the picture tube. I had a Fisher 400 back then too!!! That set had great color after I replaced the caps in the high voltage section and all the tubes in that section too.
It was a freeby. Everyone was going to square screen TVs back then. Ran the Fisher with it. Hooked up the RCA in glorious mono and ran it through four speakers!! Had a Pnasonic 8 track recorder to make tapes for my frat brothers and a Sony reel to reel for me. Great seeing your pic. Cool that it works after all these years. Would love to have a roundie but we have no room. Down to 2 systems. Wife factor. Her system is wired throughout the house and my Vintage Pioneer QX 8000 is in the livingroom and a Pioneer QX 4000 is in my shop. Nice to finally have bench. No more diningroom table
Good luck with her
eric