Made by Siemens&Halske in Munich tube plant in the 60s, G3 8B stamped codes. The same codes!
Dual stage big O getter, golden pins
One of the best sounding E88CC 6922 CCa 6N23P ECC88 6DJ8 E188CC 7308 tubes.
Real gems, emission over 100%, balanced sections. Tested in RIAA preamp too for noise and microphonics. Perfect tubes!