A powder horn, a container usually made from an animal horn, is used for carrying gunpowder. This example is engraved with the owner's name, Peter Myer; the British coat of arms, and a map of the forts in the Hudson and Mohawk valleys.
Inscription: Inscribed: PETER / MYER / HISS / HORN / ANO 1759
Nickel, Helmut. "Arms and Armor From the Permanent Collection." The Metropolitan Museum of Art Bulletin 49, no. 1 (Summer 1991). p. 47.