United Electron 31LQ6 Vacuum Tube Valve NOS NIB October 10 2024 and Tube One has a

and Tube One has a TE4 date code

The GM-LABELED ones all have 312 Sylvania EIA codes

steel plates and steel support rods

gas and transconductance on our Paul Hart-calibrated TV7/U and measured as follows:

There were no shorts or gas

United Electron 31LQ6 Vacuum Tube Valve NOS NIB October 10 2024 and Tube One has aThis new old stock, new in box United Electron 31LQ6 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