Coin Trick

I placed a nickel coin on a red leather-bound book, and shot a closeup with a 50mm lens attached to my camera body, and a reversed 135mm lens attached to it---the opposite arrangement you want for closeups. The result was a circular image, exaggerating the grain of the leather. I added vignetting to complete the image. Sort of reminiscent of a package of cheese, e.g. 5 Cent Beaver Brand, 21 Year-Old Canadian Cheddar, or Gouda, or...