I have a question about a 57mm projectile. I have one that I have sold on Ebay & now the buyer doesn't want to pay till I prove it isn't a live round. I got it at a local flea market, it was with some other stuff like a TM9-730 Manual for a 78MM Tank Gun T-41E1, from June 1957. You can tell by the rifling marks that this projectile has been fired. It has a solid pointed top & a hole, about 1/2" in diameter in the bottom. here is about a 1/2" recess then filled with dirt or something. I took it to the X Chief of Police here & he thought if it was an armed round, that it would have a screw cap on the end, for loading the munitions & setting the fuse. Can someone help me figure out if it could even be live after all these years? I figure some soldier wanted a souvenir or paperweight. Vntg WW1? ARTILLERY SHELL Military Projectile Bullet Copper 10mm | eBay Here is the listing with pics. Any info will be appreciated.