GE 5" Spacemaker

[jstout66]

I have had this for years. I remember I was excited when I got it. (got it at a thrift store for $1.00) GE cranked out a TON of these in B&W, but didn't realize they had a color version.
I used to use it in the kitchen until analog went off the air, then it went to the "useless" pile in the basement.
What I didn't know is these have an external antenna plug. Found the adaptor.. did some rigging.. and now I can use it in the basement. I have it on a shelf above the washer. What CRT did these use? I imagine they were a tad pricey when new.