Matched Pair Sylvania 50L6 Vacuum Tubes NOS NIB Oliver Cromwell And 52 and 58 where minimum

52 and 58 where minimum (65%) is 40 and 100% is 62

new in box Matsushita-MANUFACTURED

top chamfered solid-O getters and two additional vertical support rods for increased rigidity and lowered microphonics

Flashing Quality: good

new in box US-made 1P5GT tubes tested to spec on our Hickok 800

Matched Pair Sylvania 50L6 Vacuum Tubes NOS NIB Oliver Cromwell And 52 and 58 where minimumThis new old stock (from a bulk box) loosely matched pair of Sylvania 50L6 output tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 78 and Tube Two measured 84 where minimum (65%) is They both have copious quantities of flashing; O getters; gray plates; round mica spacers and anode radiators for cooler operation and longer life. They have DR and BR date codes,