4 Sylvania 7Y4 Vacuum Tubes NOS NIB Lot Of Four Alan Eaton crenelated mica spacers and excellent

crenelated mica spacers and excellent flashing

They have Y5E and 9-22 codes

Transconductance measured 49/56

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

These seven Ken-Rad 12K8 tubes tested to spec on our Paul Hart-calibrated TV-7/U

4 Sylvania 7Y4 Vacuum Tubes NOS NIB Lot Of Four Alan Eaton crenelated mica spacers and excellentThere 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