Industrial by Sylvania 6SN7GTB vacuum tube - excellent sale condition - black plate 6SN7
Industrial by Sylvania 6SN7GTB vacuum tube - excellent sale condition - black plate 6SN7, Industrial by Sylvania 6SN7GTBbarely used - excellent conditionblack platestested on a Hickok KS 15874 L2 Cardmatic tube.
Product code: Industrial by Sylvania 6SN7GTB vacuum tube - excellent sale condition - black plate 6SN7
Industrial by Sylvania 6SN7GTB
barely used - excellent condition
black plates
tested on a Hickok KS 15874 L2 Cardmatic tube tester