Nakamichi CR3A Cassette Deck

It is time to downsize. All the children are gone to college. I have too much old HiFi gear including a Nakamichi CR3A. I am original owner and have the box and the manual. It plays nicely - briefly. So it needs some work. Where should I send it? Are buyers for these machines.

I also have a 120+ collection of cassettes recorded off quality systems. (Quad 44 pre, Linn Sondek LP12 or Rega Planar 3 with quality cartridges.) The cassettes Maxell or TDK and upper end tape. What do I do with those?

Thanks for any feedback.