Dave- exactly right for most of them- all American fives but I do have some really good Zeniths, etc that actually have little slug racks and 7 tubes. I'm getting out of the antique radio hobby and have a few thousand tubes to sell. I'll keep enough to keep the fleet afloat but it's going to be a major sell off.
I'm trying to remember the details of the 6973. I know I have some and the first site I just checked had them for $80 apiece.
