Hopkins & Allen Pistol- What’s in a name? Well, our GOTD can goes by several: H&A New Model Vest Pocket Derringer, Hopkins & Allen Parrot Beak Derringer, H&A “Bird Beak Special” and others. But that didn't stop Robert E. Petersen from acquiring this rare .22 single-shot, which was made only from 1911 to 1915. This example has factory gilt round medallion mother-of-pearl grip panels and scroll engraving. It is one of the smallest pistols for conventional ammunition ever made.