2 National Union NU JANCNU1203A VT243 7C4 Vacuum Tubes NOS NIB Milspec Lot Of Two RCA Drawer They have gray plates

They have gray plates

52/34 and 56/47 where minimum (65%) is 40/45 and 100% is 62/69

These tubes were made at the Owensburo

These six US-made 6S4A tubes were tested on our Paul Hart-calibrated TV7/U for shorts

black and silver bottles and 2-22 188-5 and 604 188-5 provenance/date codes

2 National Union NU JANCNU1203A VT243 7C4 Vacuum Tubes NOS NIB Milspec Lot Of Two RCA Drawer They have gray platesThese two World War Two vintage milspec JAN CNU 1203A VT 243 7C4 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