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 2 responses by mechans

I think you would be better off having these Fisher pieces brought back to spec by a very highly regarded restorer. The Fisher Doc is famous and will make it worth more IMO. I am a bit ambivalent as a true collector usually wants rare pieces left entirely original. So you have to bet on whether there will more interest from practical users of old gear like myself (who is using a Fisher 400 right now) or the purest collector.