Mullard 6EA8 Vacuum Tube NOS NIB April 22 2023 new in box RCA 6S4A

new in box RCA 6S4A tubes tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of Sylvania black plate 12BY7 / 12BY7A tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Zenith-LABELED 6C8G dual triode was tested on our Paul Hart-calibrated for shorts

24 and 35 where minimum (65%) is 25

This RCA 872A rectifier tube appears gently-used

Mullard 6EA8 Vacuum Tube NOS NIB April 22 2023 new in box RCA 6S4AThis new old stock, new in box Mullard MANUFACTURED, Zalytron BRANDED 6EA8 tube tested to spec on our Paul Hart calibrated TV7 U. This tube has B2K1 provenance codes, meaning it was made at the Mullard plant in Blackburn, Lancashire in the first week of November, 1972. 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