I am recently retired and I hunt for at least five hours per day, weather permitting. I am finding a silver coin almost every time out with the F75 and today's coin was a no date standing liberty quarter. I wish I could say I found it at 10 inches deep, but that is not the case. What is the case is it was found in a trash infested park buried in tabs and beaver tails. It was only two inches deep and I popped it out with my screw driver. We all have to remember to not get careless. Just when you think older coins have to be 8 or 9 inches deep, this happens. I also found a couple of deep wheaties. The speed of this detector is incredible! R.L.