6 US-Made 6S4 6S4A Vacuum Tubes Valves Lot Of Six Rita Marshall It measured 40/40 where minimum

It measured 40/40 where minimum (65%) is 40/40 and 100% is 62/62

There were no shorts or gas and it measured 42 where minimum (65%) is 26

They tested (from left to right) as follows: 44

top mica spacer

These are beautiful tubes

6 US-Made 6S4 6S4A Vacuum Tubes Valves Lot Of Six Rita Marshall It measured 40/40 where minimumThese six US made 6S4A tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measure as follows: 40, 51, 64, 66, 74 and 80 where minimum (65%) is 52 and 100% is 80. 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