Original U.S. WWI Navy Inert 3-Inch Mark I Anti-Aircraft Round & Casing for 3-Inch M1917 Anti-Aircraft gun - Dated 1917 Antique Long Guns however the breech block and

however the breech block and lock plate are both dated 1873

and the bolster clean out screw is frozen

These became popular with samurai during the Muromachi period (室町時代 Muromachi jidai)

the very man who helped to design it

two Croix de Guerre and the Médaille militaire from the government of France

Original U.S. WWI Navy Inert 3-Inch Mark I Anti-Aircraft Round & Casing for 3-Inch M1917 Anti-Aircraft gun - Dated 1917 Antique Long Guns however the breech block andOriginal Item. Only One Available. The 3 inch M1917 anti aircraft gun was an American anti aircraft gun which was produced from 1915 to 1919. Production started in 1915 and ended in 1919 after World War I. It was based on the 3 inch M1903 seacoast gun, and equipped with a coastal defense gun barrel on a high elevations. A majority of the completed guns were deployed with the United States Army Coast Artillery Corps (CAC) at seacoast forts during and