4 US-Made 6AH4 6AH4GT Vacuum Tubes Lot Of Four 12SQ7 AA5

4 US-Made 6AH4 6AH4GT Vacuum Tubes Lot Of Four 12SQ7 AA5These four US made 6AH4GT tubes tested as follows on our Paul Hart calibrated TV7 U: 50, 54, 66 and 74 where minimum (65%) is 57. 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. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE

Both tubes have 2-48 SC 471 date/contract codes and are World War Two vintage

solid top mica spacers

5 milliamps Plate current draw: 21 milliamps

This perfectly-matched pair of RCA gray plate 5763 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

This Sylvania 6BS8 tube tested to spec on our Paul Hart-calibrated TV7/U

One is milspec

Selections include "I Go The Road Alone

This new old stock-testing RCA clear top 6CG7 / 6FQ7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance measured 68/64 where minimum (65%) is 36/36

These six US-made 5U8 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Philco 35Z3 tubes tested to spec on our Paul Hart-calibrated TV7/U

48 and 50 where minimum (65%) is 45