Vintage Phono Cartridge Headshell Mounting Plate

This item is a vintage headshell mounting plate or spacer component for a high-fidelity turntable phono cartridge, likely from the mid-20th century (circa 1960s-1970s). The object is constructed from a lightweight metal alloy with a polished silver-tone finish, possibly aluminum or a plated brass alloy. It features a distinctive T-shape with a narrow vertical stem containing three precision-drilled circular mount holes and a flared, curved base. At the base of the component, the numerical stamp '12' is clearly visible, likely indicating a weight in grams or a specific model series identifier. The piece shows signs of authentic age, including light surface oxidation, minor micro-abrasions, and a slight darkening of the metal in recessed areas, which provides a natural vintage patina. The craftsmanship is industrial and precise, typical of high-end audio equipment from that era. It is currently presented in a black flocking-lined plastic jewelry-style display case, suggesting it has been preserved as a collectible or spare part. The lack of significant corrosion or deformation indicates a well-maintained piece of vintage electronics hardware.