I am new to posting on this forum, but everyone seems extremely knowledgable. I hope you can help me out with a few of the pieces I recently got in a large lot I purchased. There are 2 receivers and a tuner I need help with. Any info on each, year produced, as well a value, ie. are they worth anything at all etc will be a huge help. Thanks

Fisher RS2004A Receiver
Panasonic RA-6100 Receiver
Emerson T10 Tuner

My 1996 orion has this info: the fisher was made from 81-83, the panasonic from 73-80, and the emerson from 79-81. Prices for them back then were $58, 14, 17. Possibly less now, though often the 14 and 17 type prices seem to be a standin for they don't have the foggiest.