A Presto 6N and a mono Grampian plus a box (25) 7" disc

My Objectives:

1. To get an idea of what I have.
2. To get a FAIR price for what I have.
3. To have it be used.
4. To keep it in this country so that others may use it.

You folks seem to be in the know about this stuff. Any help will be appreciated.