There is only one coin, the TRU Philippines exclusive. The "coin" that came with the recent reissue flame sword Takara MP-8 Grimlock was actually not a real coin at all. It came with a coin holder (used to hold the crown) which was made of cheap ass plastic like the MP-8X reissue throne accessory. More pictures of that
here. If it looks like below, it's not the real coin.
