Couple random questions...
Where are you at?
Was it really just a little old lady listening to the Kingston Trio at safe volume?
Given the state of things right now, the only downside would be no warranty. You may well be able to get $800-900 if you play your cards right...
If you just want to move it and recoup some money, ask 750 and be prepared to haggle a wee bit.
Of course, I'm just guessing and speculatiing, so, don't take me at my word.
Oh, and if you are in NorCal, I'll come and take it off your hands as is for 600!