4 RCA 12AZ7 12AZ7A Vacuum Tubes NOS NIB Lot Of Four 5899 JHS-5899 new in box Sylvania 7B4

new in box Sylvania 7B4 tested to spec on our Paul Hart-calibrated TV7/U

Tube One Plate Current Draw: 25

good flashing and an 817 date code

This lot of four US-made 7B7 tubes was tested on our Paul Hart-calibrated TV7 for shorts

Six are available initially

4 RCA 12AZ7 12AZ7A Vacuum Tubes NOS NIB Lot Of Four 5899 JHS-5899 new in box Sylvania 7B4This lot of four new old stock, new in box RCA 12AZ7 12AZ7A tubes tested to spec on our Paul Hart calibrated TV7 U. One is a 12AZ7 while the other three are 12AZ7As. 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