6 Philco 9BR7 Vacuum Tubes NOS NIB Lot Of Six OG2 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

This lot of six RCA gray glass 6K6GT tubes were tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of --36 volts for shorts

It has sutured tops

Transconductance measured 50/60 for Tube One and 57/57 for Tube Two where minimum (65%) is 50/50 and 100% is approximately 77/77

WE HAVE TENS OF THOUSANDS 0F VACUUM TUBES

6 Philco 9BR7 Vacuum Tubes NOS NIB Lot Of Six OG2 new in box RCA 12K8YThese six new old stock, new in box GE 6AH6 tubes tested to spec on our Paul Hart calibrated TV7 U. 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 ITEMS UP TO