National Union NU 1625 VT136 Vacuum Tube Milspec Industrial NOS NIB 3rd Quarter BW38 This lot of two new

This lot of two new old stock

new in box RCA 12K8Y tube -- and another just like it -- tested to spec on Paul Hart-calibrated TV7/U

new in box Sylvania-MANUFACTURED 14X7 tubes tested to spec on our Paul Hart-calibrated TV7/U

These rectifiers test below the cusp

These tubes all have small logos

National Union NU 1625 VT136 Vacuum Tube Milspec Industrial NOS NIB 3rd Quarter BW38 This lot of two newThis new old stock, new in National Union 1625 VT 136 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