General Electric GE 6SK7 6137 GL6137 Vacuum Tube NOS NIB Industrial 5-Star Version ST Shoulder Shape It has perforated plates

It has perforated plates

This lot of six GE 6AC7s was tested on our Paul Hart-calibrated TV7/U for shorts

This RCA Radiotron number / type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

Admiral-BRANDED 5V4G rectifier tube was tested on our Paul Hart-calibrated TV7/U

new in box Sylvania 12JT6A tube tested to spec on our Paul Hart-calibrated TV7/U

General Electric GE 6SK7 6137 GL6137 Vacuum Tube NOS NIB Industrial 5-Star Version ST Shoulder Shape It has perforated platesThis GE 5 Star industrial 6SK7 GL 6137 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