I don't know if it's the case here, but this is a possibility.
Sometimes the dies are not annealed (hardened) correctly and the center is "softer".
When used in coin production after a while the center of the die that is "soft" will start to collapse which allows the other die to push its central design element through to the other side.
My best guess.
Sometimes the dies are not annealed (hardened) correctly and the center is "softer".
When used in coin production after a while the center of the die that is "soft" will start to collapse which allows the other die to push its central design element through to the other side.
My best guess.






























