6 Philco 5X8 Vacuum Tubes Valves NOS NIB Lot Of Six Sigmund Freud Transconductance was 1530 for Tube

Transconductance was 1530 for Tube One and 1430 for Tube Two where new/nominal is within one standard deviation of 1900

new in box GE 10DE7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing RCA clear top

48 and 49 where minimum (65%) is 25

new in box Italian Sylvania 12SN7GTA dual triode was tested on our Hickok 600A for shorts

6 Philco 5X8 Vacuum Tubes Valves NOS NIB Lot Of Six Sigmund Freud Transconductance was 1530 for TubeThese six new old stock, new in box Philco 5X8 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 TO