Vintage Brass or Gold-Toned Numerical Scale Component

This item is a small, T-shaped mechanical or scientific component made from a yellow-toned metal, likely brass or possibly a gold plating. It features a vertical shaft with three evenly spaced circular perforations at the top and a wider, slightly curved base. The base is prominently stamped with the numerals '12' in a serif-style font. The object appears to be a precision-engineered part, perhaps a counterweight, a setting gauge, or a slide for a technical instrument or scale. It measures approximately one inch in height. The metal shows a moderate amount of surface patina, with fine scratches, micro-pitting, and some discoloration visible under direct lighting, indicative of age and handling. There are no obvious maker's marks besides the stamped number. It is presented in a small black plastic display case with a velvet-like lining and a clear lid, secured by a thin black elastic band. The overall craftsmanship suggests a utilitarian purpose where accuracy was required, likely dating from the mid-20th century. The condition is used but stable, with no structural deformities or significant corrosion observed.