The image below is a stock Google image I copied to illustrate my question..... Back in the 1990's part of my collection was stolen. One of my losses was a Franklin half book. In that Franklin book I had three halves that I always believed were what I called "frosted proofs". Where the relief was mirror-like and the devices appeared to be frosted. From time to time I search Google for Franklin half frosted proofs and come up empty handed. Did the mint ever produce any frosted proof Franklins?