3 Zenith 6GH8 6GH8A Vacuum Tubes NOS NIB Lot Of Three

3 Zenith 6GH8 6GH8A Vacuum Tubes NOS NIB Lot Of ThreeThis RCA black plate 6LQ6 tube tested 80 on our Paul Hart calibrated TV7 U where minimum is 54 and new is 100. 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 PROTECTION COVERS

Both tested 52/52 where minimum (65%) is 40/40

This new old stock-testing Svetlana 6550B / 6P27 perforated plate output tube was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -48 volts for shorts

new in box National Union 25Z5 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box GE 12L6GT tubes tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing matched pair of Ken-Rad-MANUFACTURED

INTRUSIVE AND DRACONONIAN GERMAN PACKAGING REGULATIONS -- AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM-- WE NO LONGER SHIP TO GERMAN ADDRESSES FROM JUNE 1

side O getters and excellent flashing

80/70 and 82/70

new in box matched pair of RCA steel plate 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U tester for shorts

new in box GE 21GY5 tubes tested to spec on our Paul Hart-calibrated TV7/U

This black plate Sylvania 5Y3GT rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

Please note there has been some flaking of the cathode material