It's good to know these are common tubes. The set I'm getting does have a slight green halo around the edges which I have seen on many Zeniths both round and rectangular. I guess I'll be keeping one eye open for these tubes from now on. I just love the round screen shape. I find it more pleasant to watch than rectangular and especially more appealing than the new 16:9 tubes. Maybe it's because my eyeballs are round.
