General Electric GE 6SK7 6137 GL6137 Vacuum Tube NOS NIB Industrial 5-Star Version ST Shoulder Shape Admiral-BRANDED 5V4G rectifier tube was

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

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

These tubes have dark

The tubes have rounded black plates

General Electric GE 6SK7 6137 GL6137 Vacuum Tube NOS NIB Industrial 5-Star Version ST Shoulder Shape Admiral-BRANDED 5V4G rectifier tube wasThis 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