The Teles could have made in the late 50s and stamped by Sonotone later. I'm sure they're the same.
I have 4 of the PW Heerlen 7062 from the same seller. two matched up well, the other 2 not so much, and one was microphonic. I also got a pair of Tung-Sol 5814A from him which were solid, and sound great. I wasn't impressed with the standard Tung-Dol 12at7, but I do have a pair of 50s Tung-Sol 12at7-WA (military version) that sound fantastic.
The 12au7s I've tried all seem rolled off on the top, which could be due to how their low amplification factor behave in the Schiit amps. 12ax7 can be a bit hot, so the 12at7 and similar variants and types seem to be the best fit for Schiit.