6 US-Made 6K5 6K5GT Vacuum Tubes NOS NIB Lot Of Six Otto Stereo LP new in box RCA 12K8Y

new in box RCA 12K8Y tube -- and another just like it -- tested to spec on Paul Hart-calibrated TV7/U

36 and 40 where minimum (65%) is 33

Transconductance measured an excellent 65/66 where minimum (65%) is 36/36

new in box US-made 5J6 tubes tested to spec on our Paul Hart-calibrated TV7/U

48 and 57 were minimum (65%) is 36 and 100% is 55

6 US-Made 6K5 6K5GT Vacuum Tubes NOS NIB Lot Of Six Otto Stereo LP new in box RCA 12K8YThese new old stock, new in box 6K5GT tubes tested to spec on our Paul Hart calibrated TV7 U. Five are Sylvania and one is National Union. 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