Mid-Century Modernist Square Cufflink

A single square-shaped cufflink featuring a geometric Mid-Century Modernist design. The face of the cufflink is divided diagonally by a gold-tone raised border, creating two distinct triangular sections. The upper-left triangle is inlaid with a deep reddish-brown tortoise shell material or a semi-translucent faux resin imitating amber or tortoise. The lower-right triangle is composed of textured gold-tone metal with an incised or enameled 'L' or hook-shaped graphic element. The outer border consists of a double-stepped frame, typical of 1950s or 1960s men's accessory aesthetics. Based on the visible color, it is likely gold-plated base metal (costume jewelry) rather than solid gold, showing some light surface wear, minor scratches, and potential oxidation around the edges of the inlay. No maker's mark is visible from this angle, but the design echoes the work of manufacturers like Swank, Foster, or Hickok. The item displays a vintage patina consistent with mid-20th-century age.