I found a strange coin in my change

I was looking through my change and I found this. It has an eagle on both sides. It turned out to be legit, it weighed and sounded correctly. I have no idea when the errors were made.

Magic coin or double tails coin. These are made by magicians. There will look like a seam on the edge where the two obverses were joined together. Still an awesome find in circulation.

That once in a lifetime find. Maybe several.