2 RCA 1851 Vacuum Tubes Valves Industrial Version Lot Of Two Black And Silver These seven Sylvania-made 3CB6 tubes

These seven Sylvania-made 3CB6 tubes tested to spec on our Paul Hart-calibrated TV7/U

On the Maxi-Matcher

This matched pair of milspec Chatham Electronics 6H6 / JAN-CAHG-6H6-WGT tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Both are acid-etched

This new old stock-testing matched pair of milspec/industrial Tung-Sol 6098 / 6AR6WA output tubes was tested on Paul Hart-calibrated TV7/U for shorts

2 RCA 1851 Vacuum Tubes Valves Industrial Version Lot Of Two Black And Silver These seven Sylvania-made 3CB6 tubesThese two industrial grade RCA 1851 pentodes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 35 and 44 where minimum (65%) is 25 and 100% is 38. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1.