7 Sylvania 6AC7 Vacuum Tubes NOS NIB Lot Of Seven 12FX8 NOS NIB

7 Sylvania 6AC7 Vacuum Tubes NOS NIB Lot Of Seven 12FX8 NOS NIBThis lot of seven new old stock, new in box Sylvania 6AC7 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

new in box US-made 22JG6A tubes tested to spec on our Paul Hart-calibrated TV7/U

an O-getter

IN OVER 7000 SALES

This lot of three Tung-Sol new old stock

I am playing them in my Sound Craftsmen RC-2 monoblocks (as an "excellent" 6SN7 substitute according to Antique Electronic Supply's "Tube Substitution Guidebook") with "Hanson Conducts Ives

34 and 35 where minimum (65%) is 25

These tubes have four shiny copper support rods

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

These US-made 7AG7s tested to spec on our Paul Hart-calibrated TV7/U

The Superior-tested tube measured "low to medium-good

copper support rods and outstanding flashing

One has a glass bottle