International Servicemaster 6CG8 6CG8A Vacuum Tube Valve NOS NIB JAN0A3 Octal new in box National Union

new in box National Union 6R7 / 6R7G tube tested to spec on our Paul Hart-calibrated TV7/U

new in box (one total) / new old stock-testing (six total) RCA 6CD6G and 6CD6GA tubes tested as follows on our Paul Hart-calibrated TV7/U:

It measured 96/78

It has an engraved / stamped base

International Servicemaster 6CG8 6CG8A Vacuum Tube Valve NOS NIB JAN0A3 Octal new in box National UnionThis new old stock, new in box International Servicemaster 6CG8A tube 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