Coin Talk

Ok, Years ago mid 1960′s my dad had placed a jug of coins in a small and old barn on our farm. The barn collapsed and dirt has slipped very slightly. In the 90′s when he was pretty sick he took me to the spot and was trying to get around to show me about where they were. Mostly consisted of quarters and dimes some nickels. No pennies or halves. So he never got around to showing me approximately where to look. So now i’m somewhat of a treasure hunter(roll searcher). I wanted to find this jug thinking ok mid 60′s quarters and dimes…silver!!! So I borrowed a metal detector from a friend. Its an old whites 5000d. It works great I have found the wood rotten and under about 3-4 inches of earth. Now this barn had lots of metal in it. The ground is full of metal. Any good tips on how to tell the difference between the silver or clad coin jar. ANd say chains coffee cans.. etc… ? Any input would be greatly appreciated.