Heavily Corroded Large Caliber Projectile/Small Shell

This item appears to be a heavily corroded and encrusted projectile, likely a large caliber bullet or a small artillery shell, consistent with the provided dimensions of approximately 12 inches in length and a weight of around 3 pounds. The overall shape is cylindrical with a distinct, tapered or pointed tip at one end and a slightly narrower, truncated base at the other. Given the heavily weathered state, it is challenging to discern the original material, though it strongly suggests a ferrous metal, possibly steel or iron, undergoing significant oxidation. The surface is almost entirely obscured by a thick, uneven layer of rust, corrosion, and what appears to be dirt or mineral accretions, indicating prolonged exposure to corrosive elements, potentially burial or submersion. There are no discernible markings, maker's stamps, or signatures visible due to the extensive surface degradation. The construction seems simple, a solid or hollow core projectile, typical of early to mid-20th century or even late 19th-century munitions. The condition issues are severe, primarily deep pitting, flaking, and complete loss of original surface finish due to advanced corrosion. There are no obvious signs of recent damage or repair, but rather a uniform patina of extreme age and neglect. Its appearance suggests it is a 'dug' item, possibly from a battlefield or an excavation site. The craftsmanship, while not fully observable, appears to be industrial and functional, designed for military application rather than aesthetic appeal. This projectile is likely inert, having long since lost any explosive components, if it ever contained them, due to its deteriorated state and age.