Raytheon 6EM5 Vacuum Tube Valve NOS NIB Duodecar and if it is

and if it is

1 milliamps with a transconductance of 2260 micromhos while Tube Two measured 23

It took two adapters but was worth it as they sounded fine in my Mini 2013

45 and 48 where minimum (65%) is 40 and 100% is 62

These tubes have black and silver bottles

Raytheon 6EM5 Vacuum Tube Valve NOS NIB Duodecar and if it isThis new old stock, new in box 6EM5 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 $250 IN