Found this near where I have pulled a couple of confederate buttons and Spanish Reales. It looks similar to a Civil War .52 cal. Sorry it's upside down, the website does this when I use my IPAD and I don't know how to fix it. Thanks
Sure looks like one from that era,a dia. measurement would be really helpful for identifying it odd thing that I tried to turn my head around to look at it, I guess it would have been even more so if I had flipped the monitor