2 National Union NU Number / Type 41 #41 Vacuum Tubes Clear Bottle Lot Of Two 1A7GT Grid Cap Flashing Quality: good

Flashing Quality: good

engraved bases and narrow rectangular mica spacers

There was no gas

Date Codes: 1-43 and NK

These tubes have mica snubbers for increased stability and lowered microphonics

2 National Union NU Number / Type 41 #41 Vacuum Tubes Clear Bottle Lot Of Two 1A7GT Grid Cap Flashing Quality: goodThese two National Union clear bottle type number 41 tubes tested as follows on our Paul Hart calibrated TV7 U: 54 and 60 where minimum (65%) is 40 and 100% is 62. 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