National Union NU Number / Type 36 #36 Vacuum Tube Balloon / Globe Bottle NOS-Testing Mullard Gold Clad new in box International Servicemaster

new in box International Servicemaster 19CG8 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Zenith 6LT8 tube tested to spec on our Paul Hart-calibrated TV7/U

52/60 and 67/58

I am playing them in one of my Radio Craftsmen RC-2 monoblocks as I write and they sound excellent

I am glad I've lived to see it

National Union NU Number / Type 36 #36 Vacuum Tube Balloon / Globe Bottle NOS-Testing Mullard Gold Clad new in box International ServicemasterThis new old stock testing National Union globe balloon style bottle number 36 tube tested 42 on our Paul Hart calibrated TV7 U where minimum (65%) is 26 and 100% is 40. 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