Well my grandson went detecting with me on sat and he used my Ace 250 and I used my At Pro. We started at 12:30 and quit at 2:00 pm. He is 14 and managed to find 40 Quarters, 3 dimes and 9 pennies. Not bad for a 14 year kid. I found 48 quarters, 11 dimes and 20 pennies with my ATP. Altogether we found $23.59 today in less than 2 hours. We hunted a high school athletic field near the grandstands and concession stand