Help identifying this coin

Hi, can someone please help to identify this coin. It's currently set in a ring

https://www.wallapop.com/item/moneda-rey-jaime-i-dragon-oro-21k-1067250521

rsirian1

https://www.wallapop.com/item/moneda-rey-jaime-i-dragon-oro-21k-1067250521

Hi, many thanks. Still can’t find much detail anywhere else. 

Hi, any idea of date? And if it is a coin or a medallion. 

What's on the other side?

Good question.  I’ll ask the owner to see if she can get it removed from the ring.