I am up in MI for work and went to this park to try the 250.The first hour found three cents. Went over to an area away from people; they were starting to show up. Got a good hit and it was a penny, about ten feet away found a 1958-nickel. Started walking for the woods and got a hit, it was a silver ring. After hitting the woods right on top of the ground found a large cent, cant read date. The rest of the time didn