World War I Era 37mm Artillery Projectile and Casing

This item is an original World War I-era 37mm artillery round, likely used in the M1916 37mm infantry gun or a similar light autocannon. The piece consists of a solid steel projectile seated within a cylindrical brass cartridge case. The projectile features a tapered, conical nose with a dark, oxidized patina typical of aged steel. Below the nose, a copper driving band is visible, exhibiting stamped markings that include 'LOT' and numerical sequences '1075-38', which served as manufacturing tracking data. The cartridge case is constructed of brass, showing a significant aged patina with areas of verdigris (greenish oxidation) and surface scuffs consistent with its age and handling. The additional context provided, 'P.E&M.CO 12-16 U.S.A', indicates the manufacturer (Poole Engineering & Machine Co.) and a production date of December 1916, placing it firmly in the late WWI period. The craftsmanship is industrial and robust, designed for military utility rather than aesthetics. Overall condition reflects a century of storage, with minor pitting and surface wear but no structural deformation recognizable. The presence of the driving band suggests the projectile was never fired, making it a complete 'fixed round' display piece.