I have no idea what company made it, or what kind of switch it uses. They are linear, but have some locking switches on a bunch of the keys.
Keycaps are doubleshot, and very similar (if not the same maker) to my Atari Keypad (http://kiibohd.com/Keyboards/CX85/).
The case is made out of MDF, which is strange (but seeing how old it is, maybe normal). I found the keyboard in pieces, and the one keycap that is missing has it's switch glued down and slider removed (epoxy or resin of some sort).
Anyways ideas on what it is?



Full set of dismantle pics (including switch disassembly): https://picasaweb.google.com/1138456619 ... directlink