Here's a pair of boxed Sylvania 12AX7/7021 tubes.  Not sure if these are NOS because they look like they might(?) be used but these, as do most all Sylvania 12AX7's from this vintage test a LOT higher than other brands from the same era.  On my Hickok 600A Gm tester where 1250-1250 is average new tube value these test 1800-2000, and 1750-2100.   As I recall, I've seen different Sylvania number tubes from this era that test WAY higher than other brands.  No clue as to why!  

Thanks to eBay's current draconian policies regarding returns, and parts changers, "renters", scammers, etc, we will no longer sell most items as working, but rather "officially" as parts, not working. Also thanks to the same policies, we will no longer ship directly to any country other than the US. Any overseas buyers must buy thru the ebay shipping program.
     The purchaser, upon receipt, might not agree as to my assessment of condition, but that's what it was HERE in MY opinion and it's being sold officially for parts or not working. It may or may not work at all when you get it!   NO REFUNDS or RETURNS!  If you don't agree to these terms DON'T BUY IT.