This is one of my favorite projects ever. It's a custom brass challenge coin, and only one was ever made. It was a gift to my hosts at something called the Hacker B&B, a gathering of friends that is one of the highlights of my year.
The AI-generated image on the back signifies games, scotch, presentations, and food, four of the popular pastimes at the event.
Both images are converted from flat 2D art to a depth map using SculptOK, an AI-based depth map generator. I tried quite a few other approaches, and nothing came close.
Polished
After lasering, the coin goes into a rock polisher for an hour or so. It does a good job of cleaning out the soot from engraving.
But the final look is much improved by an application of "brass black", followed by about twenty more minutes in the polisher. Gives it a bit of definition and age.