The 6Q7G is a double diode triode and was designed for receiver audio use.
The diodes would be for signal and AGC rectification and the triode would act as AGC amplifier or first audio amplifier.
Unlike our other 6Q7G exhibits this later production has a tubular envelope rather than the classic shouldered type. The Type designation within an octagon border suggests an American made valve.
Side view of the triode and below the diode anode screening box.
Face view showing the copper control grid supports and the grid winding. The screening box connects to the cathode. The two rods are the anodes.
The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 95 mm tall.
References: Data-sheet, Data, 1040 & 1043. Type 6Q7G was first introduced in 1936. See also1936 adverts.
