Detected my favorite farm field a few weeks back.Came away with some odds and ends,buttons and a few coins.One of the coins was a copper in rough shape but I could see some details on it.So for the past couple of weeks I have been cleaning it up.Many vaseline baths,q-tips,000 steel wool,more vaseline rubbed in and finally enough to determine what it is.
What the coin turns out to be is a 1722-24 Woods Hibernia Halfpenny.I couldn't get a great pic of the coin due to the condition,but under light and twisting and turning it you can make it out.This field has been good to me over the past four to five years as it gets plowed up in the Spring & Fall.