Vintage Marx tank as pictured. Measures 9 3/4" X 6" wide. Has some light rust here and there. Winds up, gun moves in and out, drive wheel works but track is loose (I was planning on lining the inside with a rubber bicycle inner tube liner) so it does not move. Missing one drive wheel. Some tape residue on wheels/tracks from some time in the past. Not sure if the switch works properly, seems to have a mind of its own at times. There is an oil port in the side but I did not oil it. I do not know if this is/was a sparking toy and did not notice any when I wound up the mechanism. My closeup/cropped pictures should show details.