I took my CZ3D with the stock coil and my CZ70 with a 5" coil to an old torn down school.I hunted a 3 foot strip next to the sidewalk.I didn't have much time to hunt.I found 5 wheaties from the early 1940's,a 1949 Canadian penny and a 1964 penny.The site is real trashy.They tore down the school.There is lots of schoolyard left to hunt.They also scraped some soil off the old boulevard between the road and the school.That area will be my next hunt.Hope to get back there tommorow.