Bought a 12X15 sef coil last thursday. Hunted a few places this week found 24 wheat pennies and 3 indian heads. Other than being kind of heavy i think iam going to like this coil. Tonight i had about an hour to hunt, hit a park ive hunted many times. Found a few clad coins then i get a pretty good signal and dug this good luck coin. No silver yet but i think its just a matter of time and a little more moisture cause its been dry here for a while.