National Union NU 813 Vacuum Tube Delco Nonal There are a total of

There are a total of four separate sections

48 and 48 where minimum (65%) is 40 and 100% is 62

Tube Two: 35

new in box General Electric 6U10 tube tested to spec on our Paul Hart-calibrated TV7/U

These three US-made 17DE4 tubes tested to spec on our Paul Hart-calibrated TV7 where minimum (65%) is 50

National Union NU 813 Vacuum Tube Delco Nonal There are a total ofThis National Union plate 813 output triode was tested on our Paul Hart calibrated for shorts, gas and transconductance. There were no shorts or gas. It measured 64 where minimum is 40 and new is 74. 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