Tung-Sol 12BK5 Vacuum Tube NOS NIB Type Number EIA Factory Codes: Raytheon logos

EIA Factory Codes: Raytheon logos

D getter and a 4-09 188-5 date / provenance code

WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS

New 12AU7s typically test within a standard deviation of 17/17 for gain

(New / nominal transconductance is within one standard deviation of 1900

Tung-Sol 12BK5 Vacuum Tube NOS NIB Type Number EIA Factory Codes: Raytheon logosThis new old stock, new in box Tung Sol 12BK5 and several others just like it tested to spec on our Paul Hart calibrated TV7 U. Three of these tubes are available initially in this Dutch Auction. Etsy will indicate how many are available. 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