An Art Nouveau stamped brass advertising dish produced for the Oktis brand, specifically commemorating the 1911 coronation of King George V and Queen Mary. The dish is of an elongated oval form with integral open-work handles featuring stylized whiplash curves and geometric floral motifs characteristic of the late Art Nouveau period. The central field features a relief medallion containing profile busts of the British monarchs. Above the portraits, the brand name OKTIS is stamped in capital letters, and below, the advertising slogan reads DOUBLES THE LIFE OF YOUR CORSET. The reverse shows the negative impression of the stamped design. The metal is finished with a darkened, aged patina. Small scale.