OK, to help explain I did a little experiment in my garage. I took 2 memorial cents out into the garage, and pressed them into each other using a vise. If you look at the pictures, you can see how the design is transferred onto the second coin as a mirror image. In the first close-up, you can see the last E in ONE, followed by the C E N of CENT.
In the 2nd close-up you can see the US of pluribus, and the M of unum. These are mirrored as to the real coin.
Now look at the first picture you posted, you can see the letters of ONE CENT mirrored on the coin. It was transferred from one coin being pressed against the other.
I hope this helps explain how it could have been done.


