please help

I found this I the creek bed while digging and I 2ant to know if it's real. It looks like ic3 age type stuff to me. Pics with flash on and off and a quarter to size.. this was found off old highway 100 in Haralson County, Tallapoosa, GA. USA

My machine has new batteries. It was all over the place though, reading from 0-90. I don’t think it was just the ground because even when I held the machine facing upward toward the sky it kept doing it. I also tried putting my depth settings lower and it kept acting crazy until I put it on ‘1’...

Hello Everyone I was using my cheap meddle detector when I found this. Its 1 1/4 diameter, I think its tin or copper not sure. Thin and kind sounds thin when you drop it. Has like a hinge or something above the harp like it was cut for something. Let me know just curious.