Engraving on old processor crystals is not a new thing. But CPUs are still being discovered, where the public did not know about such images before. For example, on the crystal of the old AMD Athlon K7 of 1999 found the image of a pistol.
If you want to be precise, in the images there are two at once: a revolver, reminiscent of Colt Single Action Army, and the state of Texas. Presumably, this refers to the branch of AMD in Austin.
Recall, it was recently discovered in a similar manner that Old cult processors Intel 80386 has a signature Current heads of company Peter Gelsinger (Pat Gelsinger), who was one of the main developers of this CPU 40 years ago.