Hello- By way of a recent family member's passing, I recently came into a boat load of vintage tube amps, various vintage radio components, Philco radio tubes still in their boxes, etc.. and I don't know much about these things. I have 2 McIntosh 60 Watt Amps that are in great condition and light up whenever plugged in. If these are in working order, how much would something like this fetch from the vintage radio enthusiast circle?