37mm Inert Anti-Aircraft or Anti-Tank Projectile and Casing

This item is a 37mm caliber military projectile seated within a brass cartridge case, likely dating from the World War II era (circa late 1930s to mid-1940s). The projectile itself features a solid, ogival-shaped head made of steel or iron with a darkened, oxidized finish. Below the steel tip is a prominent rotating band (driving band) made of copper or a copper-alloy, which is deeply stamped with the markings 'LOT 1075 38'. This suggest a manufacturing date or lot identification from 1938. The projectile is seated into a cylindrical brass casing that exhibits a dull, aged patina with significant surface oxidation, darkening, and minor pitting consistent with long-term storage or handling. The construction is robust, designed for high-pressure firing from an anti-aircraft or light anti-tank gun. There is a visible horizontal gap where the projectile meets the mouth of the casing. The overall condition shows signs of age and wear, including surface abrasions and discoloration of the brass, but the stamped markings remain legible. It appears to be an inert display piece, often referred to as 'trench art' or a military souvenir, though it should be handled with professional caution regarding its internal components.

I have examined the provided imagery of the 37mm inert projectile and casing. The item appears to be a standard M16-type brass casing paired with an Armor Piercing (AP) M74-style projectile, consistent with US 37mm anti-tank and anti-aircraft guns of the pre-WWII era. The 'LOT 1075 38' stamping on the rotating band indicates a 1938 production date, which is desirable for collectors of early military ordnance. The patina on the brass and the oxidation on the steel projectile suggest the item is authentic and has not been aggressively over-polished, preserving its historical character. Market demand for 37mm inert rounds remains steady among WWII enthusiasts. Comparables for common inert rounds typically fall between $100 and $300, depending on the rarity of the headstamp and the presence of a fuse. This specimen is valued toward the midpoint of that range due to the legible markings and the lack of severe structural damage, though the surface pitting on the brass slightly limits the premium. Significantly, value is predicated on the item being 100% inert. While it is presented as a display piece, I must state a critical limitation: visual inspection cannot verify the absence of residual energetics or a live primer. For full authentication and safety certification, a physical inspection is required to ensure the projectile is 'solid' and the primer is spent. Furthermore, verifying the headstamp on the base of the casing would be necessary to confirm if the projectile and casing are a 'matched' set from the same manufacturer and year, as mismatched assemblies are common in the souvenir market.