Zenith 2250R

[dieseljeep]

Originally Posted by Kevin Kuehn

I can't tell. All the pictures seem to be from the front and the green Zenith mask is covering the edges of the CRT.

Every 12" Zenith I've seen used a metal cone CRT! The 10" model used a 10BP4 glass tube.
It's been probably 50 years since I worked on one of those.
The Sams would probably show the top view of the chassis and the CRT.