Tung-Sol 50X6 Vacuum Tube NOS NIB 6DS4 Nuvistor T15 They have E5E and E5E

They have E5E and E5E date codes

There is also a shield between the triodes for reduced cross talk

This matched trio of RCA 5Z4 rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

(New 6SN7s typically test within a standard deviation of 2600 micromhos

Transconductance measured 5340 and 5260 micromhos

Tung-Sol 50X6 Vacuum Tube NOS NIB 6DS4 Nuvistor T15 They have E5E and E5EThis new old stock, new in box Tung Sol 50X6 tube tested to spec on our Paul Hart calibrated TV7. 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 TO $250