This class B circuit was found in the 1960 Mullard transistor reference manual. Transformers are the critical components. The source is not symmetric.
This is an old test circuit for integrated TTL counters, feeding a Nixie tube, common at the time....
This old oscillator using germanium transistors has a high impedance headphone as inductor to...
This preamp with several inputs using germanium transistors from the time was found in Japanese...