This was a non-working keyboard that I found at the local dump. It appeared as though some sort of sticky fluid had been spilled on the keys, causing some of them to stick. The electronics, however, appeared to have survived the incident, although one of the cables had been unplugged. After cleaning off all the keys and reassembling the whole thing, I had myself a shiny, working keyboard.
This keyboard is from back when the Command key was still the Apple Key!