I'm new to this sit. I got a for my son & I Last Christmas.We plan to get another one soon. We have been metal betecting for about two montns when it's been nice out side. We have got are permits to metal detect in parks. My son found a USAF official's coat botton in are yard, my house was built in 1918 we cam across a Morgan Dollars date 1921 without mintmark and if I was to Grad it I would say it was (Au)-(EF) but not conFirm. (About ten yr.. a go) we have an acre or so....