RCA 6DS4 Nuvistor Vacuum Valve NOS NIB FV 24 04721 This RCA 6S8GT tube was

This RCA 6S8GT tube was tested to spec on our Paul Hart-calibrated TV7/U

This lot of three Super Silvertone 6K7G tubes were tested on our Paul Hart-calibrated TV7/U for shorts gas and transconductance

42/44 and 45/46 where minimum (65%) is 33/33 and 100% is 51/51

excellent flashing and O getters

RCA 6DS4 Nuvistor Vacuum Valve NOS NIB FV 24 04721 This RCA 6S8GT tube wasThis new old stock, new in box RCA 6DS4 nuvistor 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 TO