That is from the Numismatic GC. It was from a horde of coins that was buried. I'll see if I can find the paper. Caesar is struck on the front and a tall eagle on the back with TYP YI some symbols I don't know. This is an internet jpg but mine has different markings left and right of the eagle.
![](https://dfpfmltq984k.cloudfront.net/product_image/200/S/5/sLc3F8zdqjK5Mr6yQiE79S7nWc2yw4.jpg)