4 GM Delco 5BE8 Vacuum Tubes Valves NOS NIB Lot Of Four September 10 2025 new in box RCA 17AY3

new in box RCA 17AY3 / 17AY3A / 17BS3 / 17BS3A tubes tested to spec on our Paul Hart-calibrated TV7/U

They measured 93/77 for Tube One and 95/78 for Tube Two

new in box RCA 17KV6 tubes tested to spec on our on our Paul Hart-calibrated TV7/U

Tube One measured 40/44 while Tube Two measured 42/46 where minimum (65%) is 25/25 and 100% is 38

Transconductance measured 49/56

4 GM Delco 5BE8 Vacuum Tubes Valves NOS NIB Lot Of Four September 10 2025 new in box RCA 17AY3These four new old stock, new in box US made 33GY7A 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