NIB new matched pair InternationalServiceMaster 5692/ 6SN7GT vacuum tubes

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NIB new matched pair InternationalServiceMaster 5692/ 6SN7GT vacuum tubes:
$19.99

NIB new matched pair InternationalServiceMaster

5692/ 6SN7GT vacuum tubes

they are different looking, both marted 6SN7GT, one had the anti microphonic support rods they put in 5692 premium 6SN7GTs.

you get both for this price. test new on our jackson 648a tube tester, may have light shop use