Here's some leftover 6AS7 tubes from my Atma-Sphere amps. 14 are Soviet and 8 are American (RCA, some JAN). I don't have any test results for them but they all worked fine last time they were in my amps. If any give you trouble I will, of course, pro rate a refund for any bad tubes. But I don't anticipate them giving any trouble.
I'll cover domestic insured ground and PP fee.
Feel free to ask any question or submit any offer and I'll do my best...