Hi, doesn't fit your "boombox" parameters but thought some might find it interesting just as well. Bell and Howell "Sound Machine" circa early 1970's AM FM Cassette
Welcome. Now you need the Cylindrical one to go with it http://stereo2go.com/forums/threads...e-what-boomboxes-might-have-looked-like.2251/
Wow, thanks for posting these old legacy boxes are cool since there were no set guidelines yet for design, this one feels like they threw a bunch of parts on a table and said make something cool looking.
Threw it together is a good description, the cassette player clicks into two brackets and a notched area in the bottom, no frills there.
welcome to S2G tom636 I see you are from USA, Where exactly?? and thank you for sharing the pictures of your "Sound Machine".