4 Sylvania 7Y4 Vacuum Tubes NOS NIB Lot Of Four Alan Eaton new in box RCA 12AV7

new in box RCA 12AV7 tubes tested to spec on our Paul Hart-calibrated TV7/U

not included) and they sound excellent

Transconductance measured 49/56

totally unsuited for use in guitar amps or any other vibratory environment

4 Sylvania 7Y4 Vacuum Tubes NOS NIB Lot Of Four Alan Eaton new in box RCA 12AV7There are four new old stock, new in box Sylvania 7Y4 tubes in this lot. All 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