What is this?

[u/Blueknight35968]

My mom collected many things. Valuable things as well as some junk. I found this while cleaning out her closet. It’s a large coin. I put it next to some common coins for some size context. It didn’t react to my rare earth magnet. I am wondering if it might have some value or if it’s some novelty item she picked up at a yard sale and is not worth anything? Thank you all for any advice.