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

National Union NU 35 #35 / 51 #51 Vacuum Tube Mesh Plate Shoulder Style NOS NIB Rolling StonesThis 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

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

excellent flashing and smooth

Both tubes have 2-48 SC 471 date/contract codes and are World War Two vintage

48 and 48 where minimum (65%) is 30 and 100% is 47

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:

Bottles: medium height

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

new in box RCA 17CK3 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube Four (triode): 41

These three 6G6G tubes were tested on our Paul Hart-calibrated TV7 for shorts gas and transconductance

Tube Two (triode): 32

new in box perfectly-matched pair of milspec Tung-Sol JAN-CTL-6098 / 6AR6WA output tubes was tested on Paul Hart-calibrated TV7/U for shorts