Got a wheat penny in my change today, which hasn't happened in quite some time (I’m always surprised to see one circulating.) Semmed like as reasonable a subject as any, so I grabbed a few more from my collection, arranged them, er, “artfully”, set up my strobes to help emphasize the texture, and took some macro shots.
Post-wise, these have some minor color correction (moslty boosting vibrance) and boosted definition in Aperture, but aren't too far removed from the shot straight off the camera.
Nikon D7000 w/Nikkor 18-200mm @ 200mm w/68mm of macro tubes, 1/250s @ ƒ/16, ISO100. One SB-700 camera right, with the built-in diffuser on, 1/5 power (for fill and texture); second SB-700 camera left, built-in diffuser on, 1/10 power (just to return a little detail inside the large, deep shadows.)