6 Sylvania Type / Number 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Six 19BG6G Octal T39

6 Sylvania Type / Number 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Six 19BG6G Octal T39This lot of six Sylvania number type 58 stamped engraved base tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 27, 35, 37, 44, 52 and 59 respectively, where minimum (65%) is 36 and 100% is 55. 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

new in box and tested to spec on our Paul Hart-calibrated TV7/U

Plates: black/dark gray rounded plate

Plate current draw: 20

This lot of four European PCL805 tubes was tested on our Paul Hart-calibrated TV7/U

This matched pair of GE 12B4A tubes was tested on our Paul Hart-calibrated TV7/U for shorts

These seven US-made 5V6GT tubes tested as follows on our TV7/U: 40

An 8 out of ten

This new old stock-testing matched pair of RCA 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

These tubes were made in the Soviet Union and sent to East Germany where

For sale are two new old stock

low-noise tube

Tube One measured 40/44 while Tube Two measured 42/46 where minimum (65%) is 25/25 and 100% is 38