ThurstonX
Headphoneus Supremus
It says made in the USA on my tube though?
You can be suspicious of printed labels. I posted earlier about some 6ES8s (AKA, ECC189) I got. They were labeled by Arcturus, but as was pointed out by the Lyr Tube Rolling Brain Trust, they are actually ECC88s from Holland, with two different size "halo getters." And then one died. Go figure.
So there's an old US company lying about what they were selling. That's why factory codes are vital to identifying a tube, if they're visible.