Offered is a lot of (3) 6SBN7GTB Twin Triodes by RCA.   The tubes test good on the Jackson Dynamic Tester and they show no shorts or inter-element leakage. These tubes have black ladder style plates and lower or side getters with good silver flashing. Production Codes are as follows: KW, 5-29A and BKP.  Pick up the tubes for your own amp or for work upcoming.  Mouse over the photo images to zoom in. NO RESERVE!! Thanks for looking.