4 US-Made 4DT6 4DT6A Vacuum Tubes Valves NOS NIB Lot Of Four 3rd Quarter BW36 new in box matched pair

new in box matched pair of Ken-Rad JAN-CKR-2C22 / 7193 milspec triodes was tested on our Paul Hart-calibrated TV7/U for shorts

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

O getter and excellent flashing

(New US-made 6AU6s typically test within one standard deviation of 2300 micromhos

This is a late-40s pressing with some scratches and moderate surface noise

4 US-Made 4DT6 4DT6A Vacuum Tubes Valves NOS NIB Lot Of Four 3rd Quarter BW36 new in box matched pairThese four new old stock, new in box US made 4DT6 4DT6A tubes 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