Here are pictures of it. I was wondering if anyone could tell me what it is and who would want it e.g. collector, museum, no one.
The Keyer is a type of radio use by the United States military to decipher morse code. It was made during the 50's. The type you have appears to be a practice model and not the full thing, but I may need to double check that.
http://www.radionerds.com/images/b/ba/TM-11-6940-200-20.pdf
Here is the operational manual.