how to value Fisher preamp


I have a Fisher 400-cx-2 in the walnut case, 100% original, never touched and is 100% working condition. It is part of my dad's system that he assembled in the early sixties. He was always very fussy about it and and it shows. He passed many years ago, and mom feels like it is time to sell it off, but we need to get some ides about price and if anything needs to be serviced. There is also a Fisher KM-60 tuner in the walnut cab that works perfectly, stereo beam and all.
Two of the knob trim covers (gold)are off(one missing), but the knobs are still intact. I am wondering about finding the knob cover and if they can be re-glued?
Do vintage pieces like this need to be re-tubed, or if working well just put up for sale, and how does that affect value? Any input is helpful.
rtiff

Showing 1 response by jmcgrogan2

If you are looking for more than $10 at a garage sale, then these units should definitely be serviced before being put up for sale. The service person should have a good idea of the value of the piece.
That's just my opinion. I know I would not shell out what some folks will pay for vintage units without some form of service documentation. I might take a flyer on something at a yard sale w/o documentation, but if you think it's worth more money, it will be up to you to provide the proof.