I found this medal on ebay but cannot find any other info on it. The seller has not responded to my questions about it either and just want to know if it’s authentic and where it comes from. Thank you!
Based on this resource , it belongs to the Pokemon Metal Collection, XY&Z Special series.
Hope this helps.
Cheers!
@mrbubbles is correct 
It’s a coin that’s a part of the Pokémon Metal Collection line produced by the toy company Kyodo. Available from Gachapon capsule machines For ¥100 per twist
More information here - Pokemon Metal Collection – Metal Dracky
