Howdy! :3This is an original Amiga 500 keyboard with the Mitsumi controller board. Every single key works and all of the lights work as well.But the F10 key is missing its spring when I took it apart years ago to clean it.If the F10 key is pressed, it will stay pressed until you manually lift the key. Really easy to add a new spring to the key but I just don't have any spares.Selling as is of course.