For $20, I would have bought and made room for that one too! Congratulations Dave. Rare is the Zenith of this vintage that does NOT produce a raster. Enjoy!!!
My only TV-stereo combo is a non-remote 25MC36 in the same style-finish as yours. That one I have not gotten around to power up yet, so this is fun to watch.
Make sure to stabilize that horizontal efficiency coil so it doesn't pop-apart on you, at the rear left corner under the 6BK4
That late 1965 chassis was followed by two more roundie chassis. It is actually a like the 24MC32 chassis with a pincushion circuit added for the "new rectangular tube", also omitted on the last similar round-screen chassis 24NC31, etc. The 25NC38 was the second series of rectangular tube TVs. Another workhorse predating the 20X1C36/38, first to use the 6HS5 pulse regulator in place of the 6BK4C-6EL4A shunt reg.
Use an old toothbrush to clean the top-sides of the terminal strips and make sure they are still soldered at the chassis grounds. High hours combined with some vibration challenges even the most robust dip-soldered service-saver chassis.
EDIT_ looking at your chassis, the efficiency coil is under the chassis and next to the damper tube.