4 Sylvania 12HG7 12GN7 12GN7A Vacuum Tubes Valves NOS NIB Lot Of Four Stamped Base Thia new old stock

Thia new old stock

Micanol bases

Transconductance measured 42 and 46 where minimum (65%) is 30

They measured 64

Please be sure your device has enough current to run them

4 Sylvania 12HG7 12GN7 12GN7A Vacuum Tubes Valves NOS NIB Lot Of Four Stamped Base Thia new old stockThese for new old stock, new in box Sylvania 12HG7 12GN7 12GN7A 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