Mullard UBC41 Vacuum Tube NOS NIB Super Silvertone but the bottle is firmly-cemented

but the bottle is firmly-cemented to it and there is no movement at all possible

These rectifiers test below the cusp

5 milliamps' plate current and measured 2760 micromhos

new in box Cunningham 14F7 tube tested to spec on our Paul Hart-calibrated TV7/U

Mullard UBC41 Vacuum Tube NOS NIB Super Silvertone but the bottle is firmly-cementedThis new old stock, new in box Mullard UBC41 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 COVERS ITEMS UP TO