It is lucky, so it isn’t made of the standard copper alloy. It just happens to be the one penny randomly minted from pure iridium. The artifact’s canon stipulates that no one is ever aware of this.
Now, I know we not out here in this day an age not only discriminatin against caffeinated drinks of lowered emotional states, but also proudly posting photographic evidence of said bigotry on social media. Y’all really need to do better smfh