Pokemon Center 2018 It's Mimikyu Campaign Mimikyu Gold Metal Coin. It was only available inside the It's Mimikyu Card Set that was released only in Japan in February, 2018, for a very limited time and in very limited quantity, during the It's Mimikyu campaign (contents of the theme deck NOT included. You will receive only the coin). The coin features Mimikyu on both sides of the coin. Made of metal.