I am very new to the hobby. I have only been out about three times using a very cheap detector. I hope to buy a 250 soon, so that is why I am posting on this board. My first and only silver is the mercury dime in the photo. The pennies to the right are the mystery to me. They are in very bad shape. I live in North Carolina in a part of the state known as the sandhills. This land was under water more recent than the rest of the state, but still a few thousand years back. I am a couple hundred miles from the coast. These items were dug from a creek that has been a popular swimming hole for many years. The bad pennies do seem to be 1982 and up as far as I can tell. Has anyone else noticed this problem? Jonathan