Here' a picture of it, it's obviously had the CRT aired out prior to getting hit with the pick ax, there's a spot in the center of the screen.
Here's a Website with a picture of one like it:
http://www.hemagazine.com/CRT
And it looks like a 1210U, the first model sold in the U.S. according to this Site.
http://www.rwhirled.com/portacolor/Sony-1210U.htm