4 US-Made 12K5 Vacuum Tubes Valves NOS NIB Lot Of Four 5850 Transconductance measured 2000/1900 micromhos for

Transconductance measured 2000/1900 micromhos for Tube One and 2000/2000 micromhos for Tube Two

Tube One measured 73 while Tube Two measured 74 where minimum (65%) is 50

These tubes have dark-gray

new in box (For Tube One) matched pair of Unitron 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

" Tube one has a brown base and 59-43 date codes while Tube Two has 1-17 date codes and a black base

4 US-Made 12K5 Vacuum Tubes Valves NOS NIB Lot Of Four 5850 Transconductance measured 2000/1900 micromhos forThese four new old stock, new in box US made 12K5 tubes 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