2 RCA 6BH6 Vacuum Tubes Valves NOS NIB Lot Of Two June 30 2023 This hardcover book -- and

This hardcover book -- and its dust jacket -- is in very good condition

It measured an almost-perfectly-balanced 59/57 where minimum (65%) is 40/40 and 100% is 62/62

new in box (for Tube One) matched pair of RCA 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U tester for shorts

new in box RCA triple mica 9002 tube tested to spec on our Paul Hart-calibrated TV7/U

2 RCA 6BH6 Vacuum Tubes Valves NOS NIB Lot Of Two June 30 2023 This hardcover book -- andThese two RCA 6BH6 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 COVERS ITEMS UP TO $250 IN VALUE. IF AN ITEM IS