I found this in knee deep water, it sounded like a couple of tabs...it was down a few scoops and I did not expect much..It was still very dark out, but I could feel the weight of this and walked back to my car to have a proper look...non magnetic...feels too damn heavy and smooth to be brass..still wasn't certain, so I just went on home and got out the acid...hit with 10k...hit it with 14...hit it with 18..still not any effect at all on it...as I was looking at the thing I found a few hallmarks and on two links .999...I'm done for the day..
Mud
Mud