RCA Mullard 4EH7 LF183 Vacuum Tube NOS NIB Steven Curtis Please see Picture Four

Please see Picture Four

The dust jacket looks new -- as does the book itself

new in box CBS black plate 12AV7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing engraved base

RCA Mullard 4EH7 LF183 Vacuum Tube NOS NIB Steven Curtis Please see Picture FourThis new old stock, new in box RCA LABELED, Mullard MANUFACTURED 4HE7 LF183 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