This circuit was found in a 1967’s Ferranti documentation. The components are from that time. The circuit can be designed based on current components.
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...