This fake coins are all on eBay and that kind of sites. An easy way to know if the coins are fake is by using a magnet. If it sticks it's for sure a fake. If it doesn't it might be real or it's made of some metal that's not magnetic. You just have to look carefully at the design before buying one.
We're it me, I would start a new thread, with more information as to how acquired, specs of the coin, such as weight and diameter, etc...rather than post on a dead thread of a fake coin.
Given this is your first post, we welcome you to Tnet, and hope you find the answers from trusted contributors on the site.
I'm sort of glad the thread has been re-activated. I'm pretty sure that Daniel Delaney had one of these (or maybe slightly older) when he was murdered in 1865. Hoping someone will find it, probably in the downtown millrace.