Well, it doesn't have a round CRT, but this set is quite unusual. It is a Mitsubishi 6CT-338 from 1964-65. It uses three colored 6" CRTs and several mirrors to produce the color picture. It's unusual to see a color picture without the phosphor dots or stripes of a normal TV. Sometime I'll replace the troublesome paper/oil capacitors and get this thing working like it should.