0922172057-1 by geetar_freek posted Sep 22, 2017 at 9:38 PM I'm looking for any information on this. I got it from my grandpa who allegedly says this was a torpedo that was dropped by airplanes. He was in the navy during WW2. I can't seem to find anything online. It's tough to search for information on it when I have no clue what it really is. It also appears to have a 3 digit serial number or number stamped into the shaft portion.