[photo] See caption below for details.
Spontoon (top)
American
1775-1780
Iron. L 40cm
The George C. Neumann Collection, Valley Forge National Historical Park, VAFO 627

Spontoon (middle)
American
1775-1780
Iron. L 41.2 cm
The George C. Neumann Collection, Valley Forge National Historical Park, VAFO 602

Halberd (bottom)
American, 1740-1750
By 1775 this weapon was slowly phased out and replaced by other edged weapons.
Iron. L 44.7 cm
The George C. Neumann Collection, Valley Forge National Historical Park, VAFO 566