6 Philco 5X8 Vacuum Tubes Valves NOS NIB Lot Of Six Sigmund Freud mesh plate tubes tested 42

mesh plate tubes tested 42 and 50 on our Paul Hart-calibrated TV7/U where minimum (65%) is 25 and 100% is 38

48 and 49 where minimum (65%) is 25

This nicely-illustrated story book is in very good condition

Transconductance measured (From left to right): 36

5 -- maybe an eight -- out of ten

6 Philco 5X8 Vacuum Tubes Valves NOS NIB Lot Of Six Sigmund Freud mesh plate tubes tested 42These 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