6 RCA Radiotron 12SH7 Vacuum Tubes NOS NIB Lot Of Six April 22 2022 This Korean War-vintage tube has

This Korean War-vintage tube has US Army Signal Corps SC 402 contract codes and 1-44 date codes

rectangular mica and smooth rectangular bottom spacers and excellent flashing

Two are GEs and the third is a Tung-Sol

Sperry-BRANDED (SPL) 6V6GT output tubes was tested on our Maxi-Matcher 2 in Real World conditions with 400 volts on the plates and a bias of -36 volts for shorts

This pressing has light to moderate noise

6 RCA Radiotron 12SH7 Vacuum Tubes NOS NIB Lot Of Six April 22 2022 This Korean War-vintage tube hasThis lot of six new old stock, new in box RCA Radiotron 12SH7 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