I have an original Filco Majestouch 104key with brown switches and N-key rollover (model FKBN104M/EB) which I've had for a few years now. I still have the original box and plastic dust cover for it, red ESC key, USB to PS/2 adapter, original receipt, and anything else that came with it. I bought it from EliteKeyboards.com back when they still sold Filco band keyboards. The keycaps have started to show signs of use, where the coating on the plastic has worn down on a few commonly used keys.
How much do you think I could get for it?