That is one of the 1957-58 models with a vertically oriented chassis U1 or U2. The CRT is a 90-degree 21CBP4 or similar, very easy to find.
This was one of GE's first models using the "new" printed circuit boards. I had a table model with just power tuning and it was fun to service into a great performer, far better than GE's "portable" models.
I have a 1956 "Ultra Vision" with controls (and chassis) above the picture tube the last GE using dip-soldering. Its 21AUP4 was dead but the ETF sold me a NOS Raytheon replacement at reasonable cost. It makes a raster even before a re-cap, GE used fewer but better parts
, Philco on the other hand.....
This is absolutely worth getting for the sheer fun of it or at least saving from a terrible fate.