Toshiba RT-2800
The RT-2800, also called the Actas, was a mono single-speaker boombox sold by Toshiba in 1977. It made an appearance in the movie "Fame", carried by actor Gene Anthony Ray. It features a 3-band AM/FM/SW tuner, a cassette player, and a detachable microphone that swivels from the main unit. This microphone was probably used by kids to play "light saber" more than anything else. You were supposed to attach a "Parabola Reflector" dish that supposedly increased the amount of sound the mic could pick up. Sadly, most of those dishes are long gone, missing or thrown out. An RT-2800 complete with its parabolic dish would fetch some decent money.
Its dimensions are 418mm wide, 251mm tall, and 112mm deep. The speaker is 14cm (5.5"). Output power is 3W @ 10% THD.