Sylvania 7B4 Vacuum Tube NOS NIB Robert Frost new in box Sylvania 6V4

new in box Sylvania 6V4 / EZ80 rectifier tube tested to spec on Paul Hart-calibrated TV7/U

Minimum (65%) is 32/32 and 100% 66/66

This CD plays fine

This new old stock-testing matched pair of RCA 6BL7GTA dual triodes was tested on our TV7/U for shorts

Sylvania 7B4 Vacuum Tube NOS NIB Robert Frost new in box Sylvania 6V4This new old stock, new in box Sylvania 7B4 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 $250 IN