Found them right in them middle of the city(Cedar Rapids, IA) in my parents small back yard! They were right next to a really old tree. Not worth much at all, but really neat historical items I'd have never guessed would have been there. House was built 20 years after WWII as well, but tree was probably 150+ years old. That's why you never know! I'm loving the Gamma too, in just a few visits to local parks, have dug up around 50 coins.