Item Tag: RCA, General Electric, Mullard, USSR

Mullard 12AU7 ECC82 1953 Square Getter. 6AS6W Vacuum Tube Thermionic Signal Amplification Made in USSR. RCA 11723 Vacuum Tube Made in USA. GAS8 12AX7 / ECC83 Vacuum Tube Filter Audio, Amp, Drivers, Pre Amp.