A similar TV seemed to be a favorite of motels, could that be a CTC36? That was only the third chassis for RCA's 19" models, knobs suggest 1968 or 9, after the logo change. The 4-point star knob and rocker power switch came later IIRC.
I still see the "color TV by RCA" signs, below the usual motel sign, once in a while. I serviced quite a few motel sets at the two RCA shops I worked, they always smelled smoky. I also recall the focus adjustments did not have much effect
they were tough sets and mostly, I cleaned the tuners and made the usual adjustments.