National Union NU 813 Vacuum Tube Delco Nonal These four RCA and Cunningham

These four RCA and Cunningham number / type 27 tubes tested as low goodand good on our Paul Hart-calibrated TV7/U

new in box RCA 6LN8 / LCf80 tubes tested to spec on our Paul Hart-calibrated TV7/U

stout gray plates

Their Apex numbers are 26 milliamps

National Union NU 813 Vacuum Tube Delco Nonal These four RCA and CunninghamThis 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