After buying some clear Guild knobs on Ebay and doubting their veracity, I realized that there was no way to determine if they were accurate. I decided to do what any detail-obsessed nerd with a macro lens and stupidly powerful studio lights would do: I figured out the differences, photographed each, and wrote this article so that others might know the the subtleties between four eras of clear Guild G-shield knobs. (more…)
