4 US-Made 12K5 Vacuum Tubes Valves NOS NIB Lot Of Four 5850 crenelated mica spacers and excellent

crenelated mica spacers and excellent flashing

The vinyl is heavy with a light to lightly-moderate amount of pops and ticks

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

These tubes have dark-gray

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

4 US-Made 12K5 Vacuum Tubes Valves NOS NIB Lot Of Four 5850 crenelated mica spacers and excellentThese 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