The back of the coin is the only thing that arises some suspicion, below the ‘64’ in the date their is a mark that seems like the aftermath of tooling.
It’s considered a pattern countermarking, instead of using up money on new metals to strike they would countermark patterns on pre-existing coins. With that said, it is a type coin.
I still seek to know it’s authenticity.
The diameter and weight are a little under but it looks fine.
https://www.ebay.com/itm/394972922318?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=plkRNlwRRl2&sssrc=4429486&ssuid=RaNu65G_TWW&var=&widget_ver=artemis&media=COPY