This month we have another rather unusual tube. The 3C24:
The 3C24 is a transmitting tube developed for Class B audio amplifier or modulator use or for Class C RF amplifier or oscillator service.EIMAC data sheet. The tubes shown below are kindly provided by Josef from Vienna who has a good collection of some crazy tubes.
Starting with a 3C24 in military packaging made by North American Philips Co. (Norelco).