Westinghouse Number / Type 41 #41 Vacuum Tube Black Plate Clear Straight Bottle NOS-Testing Cunningham NOS NIB

Westinghouse Number / Type 41 #41 Vacuum Tube Black Plate Clear Straight Bottle NOS-Testing Cunningham NOS NIBThis new old stock testing Westinghouse straight bottle number type 41 tube tested 67 on our Paul Hart calibrated TV7 U where minimum (65%) is 40 and 100% is 62. It has a narrow, straight bottle for cramped spaces; an anode radiator for cooler operation and longer tube life; black plates, a clear bottle; a dimple sheet getter and outstanding flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT

The pressing is quite-quiet with little surface noise and only the occasional pop and tick

Tube Two measured 25

nonetheless firmly-cemented to their bottles

And though this tube tests two standard deviations from the mean

Tube Two Transconductance: 45/45

new in box Zenith 17AY3 / 17AY3A / 17BS3 / 17BS3A tubes tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 59 for both tubes where minimum (65%) is 40

new in box CBS-Hytron 8CS7 tested to spec on our Paul Hart-calibrated TV7/U

IT IS YOUR RESPONSIBILTY TO INTERACT WITH YOUR CUSTOMS AND POSTAL AUTHORITIES TO FIND THE PACKAGE

but They are more cosmetic than anything else

But it does come with a very-well-preserved lyric booklet

no codes on the bases and "6CA7 EL34 USA" on the bottles and excellent flashing