9 National Union NU Number Type 27 #27 Vacuum Tubes Lot Of Nine 9 Lot Of Nine new in box Amperex 6R3

new in box Amperex 6R3 / EY8 tubes tested to spec on our Paul Hart-calibrated TV7/U

These three GE GE 5-Star industrial 6265 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 73/74 while Tube Two measured 78/75 where minimum (65%) is 50/50 and 100% is 77/77

These seven new old stock

The 1X2 has been revised to "1X2A"

9 National Union NU Number Type 27 #27 Vacuum Tubes Lot Of Nine 9 Lot Of Nine new in box Amperex 6R3These nine National Union number type 27 tubes tested as good on our Paul Hart calibrated TV7 U. Transconductance readings are 25, 27, 28, 30, 30, 32, 32, 34 and 35 where minimum (65%) is 25. 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