Three of us hit a site last week that has given up several coins from the early 1800s but that wasn't the case this hunt. I was fortunate to find a barely discernible shield nickle at one field. But, the first field we hit gave me my first 18th century coin. I started off by digging a 69 cal. round ball and then about 30' away I got a high 80s signal on my DFX that broke up a little and I almost passed it up as trash. I'm glad I dug it because it turned out to be my oldest coin. It's a 1775 Georgivs III Rex Irish half pence. It has a harp on the back with the word Hibernia around the edge. Here are some pics of it as I found it.