I'm beginning to see a pattern here. I have hunted 4 yards in the last 2 weeks, all houses pre 1900's with one dated 1776. I got tons of memorial cents, one Merc and one beat Large Cent, 1851. Either the coins are too deep for the machine or there just isn't good coins to be found. I suppose some of these places could have been filled in or just the layers and layers of mulck from cutting the grass have added too many inches. I don't really feel like excavating a foot or so with the homeowner standing righ there, so I don't run the machine very hot. I was wondering if anyone else runs into this situation. I have much better luck in fields, but have taken to the lawns lately. Ron