6 US-Made 6GC5 Vacuum Tubes Valves Lot Of Six Gray Glass This hardcover book is in

This hardcover book is in very good condition

I played them with adapters (not included) in my Radio Craftsmen RC-2 monoblocks and they sounded great even though they test on the cusp

64 and 70 where minimum (65%) is 49

It is somewhat microphonic

6 US-Made 6GC5 Vacuum Tubes Valves Lot Of Six Gray Glass This hardcover book is inThese 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