Mullard 6EM5 Vacuum Tube NOS NIB Black Bottles This new old stock-testing RCA

This new old stock-testing RCA 6680 / 12AU7A / ECC82 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

a thimble getter and great flashing

almost-perfectly-matched pair of RCA (Hewlett-Packard By RCA) 6AG7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

but not in guitar amps and other environments with loud noise and/or excessive vibration

This new old stock-testing gold pin

Mullard 6EM5 Vacuum Tube NOS NIB Black Bottles This new old stock-testing RCAThis new old stock, new in box GE branded 6EM5 tube tested to spec on our Paul Hart calibrated TV7 U. I believe it is a Mullard as it has sutured tops and is labelled ""GT BRITAIN." It lacks any kind of date or provenance code. 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.