We found it downstairs in our robotics room in school. Our robotics room is a sub basement which was also a sprinkler control valve something room, a former Fallout shelter,(which really cant be now, since there are vents in the room...) and was once home to the rifle club back in god knows when. in fact the shooting range is still there, its part of the room. its a narrow little wide passage in the concrere wall, which eventually opens into a large room where the targets were. theres no light there now. but we found this thing in there. in the narrow part. we saw the back wheel thing and pulled it out.
Says "Spartan" on it, and on top of that in smaller letters, "Manufactured in Great Britain."