Issued in 1971, this 3.50 schilling Austrian commemorative stamp marks the XXIII Congress of the International Chamber of Commerce held in Vienna. Designed by O. Zeiller, the emblem depicts a caduceus—symbolizing commerce and negotiation—combined with an anchor and fish motif, all rendered in gold and black with silver accents. The elegant blue-gray border frames the sophisticated heraldic design, reflecting Austria’s role as a center for global trade dialogue during the postwar economic era. A fine example of modernist heraldry in Austrian philately.