WWI Era German Military Canteen (Feldflasche)

This item is identified as a WWI-era German military canteen, also known as a Feldflasche. It features a flattened, oblong, or kidney-shaped body constructed from what appears to be aluminum, indicative of later war production or a specific variant. The canteen has a roughly vertical ribbed pattern on its surface, likely for structural rigidity and perhaps better grip, with approximately seven or eight prominent vertical depressions. The primary color is a dull, unpolished metallic grey, showing significant signs of wear and age, including scratches, scuffs, and possibly some minor dents, contributing to a visible patina. The neck of the canteen is threaded for a screw-on cap, which is present and appears to be made of the same metal. A small metal chain connects the cap to a loop on the canteen's neck, preventing loss. Attached to the canteen are two attachment points for a carrying strap. The strap itself is made from a coarse, possibly canvas or linen, woven fabric in a drab olive or khaki color, consistent with military webbing of the period. The strap shows considerable fraying, discoloration, and wear, particularly where it has been knotted or secured, suggesting extensive use. There are no immediately visible maker's marks, stamps, or significant distinguishing features beyond its utilitarian military design. The overall condition suggests authenticity and age, typical of a field-used item from the early 20th century. Its construction and material point towards a robust design for military field use, and the visible wear indicates it served its intended purpose.