National Union NU 35 #35 / 51 #51 Vacuum Tube Mesh Plate Shoulder Style NOS NIB Rolling Stones Bottles: medium height

Bottles: medium height

perfectly-matched pair of Ken-Rad 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

excellent flashing and smooth

These six US-made 7B8 tubes tested as follows on our Paul Hart-calibrated TV7/U where minimum (65%) is 29 and 100% is 45:

This perfectly-matched pair of Wards Super Airline black bottle type / number 41 tubes tested as follows on our Paul Hart-calibrated TV7/U:

National Union NU 35 #35 / 51 #51 Vacuum Tube Mesh Plate Shoulder Style NOS NIB Rolling Stones Bottles: medium heightThis new old stock, new in box National Union 35 51 tube 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