3 National Union NU Type / Number 58 #58 Vacuum Tubes Valves Lot Of Three Juive A Tanger new in box RCA 6HS5

new in box RCA 6HS5 tested to spec on our Paul Hart-calibrated TV7/U

bottom D getters and copper support rods

This black plate GE 5Y3G rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

This new old stock-testing RCA 6CG7 / 6FQ7 dual triode tested a perfectly-balanced 2600/2600 micromhos on our Hickok 800

I have played it in one of my ArtSound 805 monoblocks and it sounds excellent

3 National Union NU Type / Number 58 #58 Vacuum Tubes Valves Lot Of Three Juive A Tanger new in box RCA 6HS5This lot of three National Union number type 58 stamped engraved base tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They measured 31, 42 and 50, respectively, where minimum (65%) is 36 and 100% is 56. 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