4 RCA 50L6 50L6GT Vacuum Tubes Valves Black Plate Clear Bottle Lot Of Four January 30 2026 new in box GE 12AX4

new in box GE 12AX4 tubes tested to spec on our Paul Hart-calibrated TV7/U

5-8 out of 10

new in box matched pair of Raytheon 6SD7GT / JAN-CRP-6SD7GT pentodes was tested on our Paul Hart-calibrated TV7 for shorts

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36 and 48 where minimum (65%) is 29

4 RCA 50L6 50L6GT Vacuum Tubes Valves Black Plate Clear Bottle Lot Of Four January 30 2026 new in box GE 12AX4This lot of four RCA black plate, clear bottle 50L6GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 50, 55, 64 and 72 where minimum (65%) is 45 and 100% is 69. 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