Baldwin by Raytheon 12AX7A Black Plate Halo Getter ECC83 Balanced Matched Tubes

Up for sale is a pair of balanced and matched Baldwin by Raytheon 12AX7A Black Plate Halo Getter Vacuum Tubes.  These tubes tests strong with a calibrated Hickok 539a.  No shorts were present and all Gm values were found to be well above the minimum.  Don't miss out on your chance to grab these rare sought after vacuum tubes.Details: Type: 12AX7A / ECC83 Brand: Baldwin by Raytheon Getter Type: Halo (Top O) Plate Color: Black Plate Characteristics: Ladder Mica Count: Dual All tubes are tested on a calibrated Hickok 539a with a specially designed case that maintains proper testing temperature.  Gm Test Scores are between 1600/1600 and 1800/1800.  Minimum Gm values to pass are 875/875.  Test scores will be written on each tube which is easily wiped away.  I can remove the writing from the tube if requested.  The price is for one pair of balanced and matched vacuum tubes.