Coleco ADAM keyboard and joystick. I had several complete machines I bought as a group, and there was one more keyboard and joystick included that didn't have matching computers. I sold the others with the systems, and kept the best keyboard and joystick for myself, thinking I would later get another system for myself and use the keyboard and joystick with it, but decided I'm just going to get a ColecoVision console instead, so I don't need this keyboard or joystick.
eBay