Silver pistol-grip knife with curved blunt steel blade; engraved armorial device on hollow handle depicts crest of a mermaid or siren with flowing hair and textured skin in profile proper erased on a ducal coronet and wreath. Blade front has three incuse stamps, all partial, oriented along spine and facing handle: a dagger or trident, an imperial crown and "[B]IRD" in serif letters. From a set of 12 knives and 12 forks stored in original shagreen-covered case, 1978.2424.01-.025.