Late 18th century, Napoleonic period. Flattened horn of plain lozenge section with wood base. Slender brass spout with medial ring to allow insertion in the cannon vent for rapid loading. Spout base with an integral eye and suspension ring. The single ring was for suspending from the cannon carriage, opposed to a shoulder slung flask which needed two rings. A little delamination of the horn at the base, otherwise excellent. Type used through the Civil War.