You're right, guys. Tube has air in it. I also saw what appeared to be back of set. It is a 1948 set, and fairly common. It uses KCS 28 chassis. As for 9T245, I like them. Need an original stand for mine. Also, a big favorite of mine is a set I just traded for. Tim traded me a 1949 RCA 9T270 16" table top tv that originally came from factory in oak. Some idiot painted it pink! I'm in process of stipping case now. I saww all the evidence that it was originally finnished in oak. My other big favorite is a 1946 641tv RCA Victor tv, radio, phonograph I own in a blonde manoganny case. I'm in middle of restoring that one. I re-built radio, and amplifier, and have them playing. Next up is tv.