6 US-Made 6GC5 Vacuum Tubes Valves Lot Of Six Gray Glass It is somewhat microphonic

It is somewhat microphonic

There were no shorts or gas and they measured 36/30

Sylvania-BRANDED 8BQ5 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Raytheon 1032 / CK1032 is one of the strangest tubes I've ever seen and I have no idea how to test it

This hardcover book is in very good condition

6 US-Made 6GC5 Vacuum Tubes Valves Lot Of Six Gray Glass It is somewhat microphonicThese six 6GC5 tubes were tested on our Paul Hart calibrated TV 7 U. They measured 52, 62, 63, 67, 68 and 69 where minimum is 45 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