Got myself an Xmas Present for me, a new 6" DD Coil 18.75khz. Went to a little park I know of and hunted for several hours, not many targets dug overall, I did get 6 penny's, all zinc's and wasted, and 1 1907 Indian Head Penny, my oldest coin so far, lots of flip tops, gotta dig em, next one might be a gold ring! I found good depth and good target response. I found several penny's in a wad of trash and had to dig out the targets one at a time to get the good target.