※ Since there are no half of the getters on one side, it is inexpensive (see image 4) pair tube heat dissipation double triode tube made in America lot: 7219/7513 measured value 46/44 (rejection value 40) with original box ※Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box