3 Philco 10DE7 Vacuum Tubes NOS NIB Lot Of Three Trio November 25 2025 new in box Sylvania 19BG6G

new in box Sylvania 19BG6G tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 45/40 while Tube Two measured 52/50 where minimum (65%) is 40/40 and 100% is 62/62

This is a fun LP

This Sylvania 6B4G tubes was tested on our Hickok Paul Hart-calibrated TV7/U for transconductance

This new old stock-TESTING matched pair of Sylvania 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

3 Philco 10DE7 Vacuum Tubes NOS NIB Lot Of Three Trio November 25 2025 new in box Sylvania 19BG6GThese three new old stock, new in box Philco 10DE7 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 UP