Jr was using my new Goldbug DP at the local small town park.. This park is intersected by RR tracks and 25 ft either side is one sheet of iron where all machine we have tried have failed.. Highest end W's and M's went bonkers! He cranked up the disc to 80 went a few feet and got a high penny reading and dug a 42 wheatie at 5", then he yelled, ripped of the headphones and came running.. A1938 half in the hole with the wheatie !! First one for him.. Then a day later he borrowed it and him and his son found a 1944 half at 4"in deep trash along the property line of a old rental house !! Handfuls of clad.. Great machine!!