United States; Die-stamped copper alloy, number stamped "91681" on the reverse, 40.8 mm x 57 mm, horizontal pinback, red residue and surface wear evident on the eagle,
Footnote: The United States entered the First World War in April 1917. Within days, the federal government created the Emergency Fleet Corporation (EFC) to construct a fleet of merchant ships. The EFC hired the American International Shipbuilding Corporation to build and operate the largest shipyard in the world: Hog Island, near Philadelphia. This badge identified the wearer as a member of the First World War Hog Island shipbuilding team.

