United States. A Society of the Army of the Potomac Membership Badge
Three-piece construction, in bronze gilt with red, white and blue enamels, measuring 47.2 mm (w) x 62.5 mm (h) inclusive of its fleur-de-lis loop suspension, intact enamels, very light contact, near extremely fine.
Footnote: The Society of the Army of the Potomac was a military society founded in 1869, which was composed of officers and enlisted men who served with the Army of the Potomac during the American Civil War.

