Part 1: Belgium
Belgium pick 138a: 20 Francs from 1964
15.6.1964. Black on blue, orange, and multicolored underprint. King Baudouin I at left and as watermark, arms at lower right. Atomium complex in Brussels at right on back.
15.6.1964. Black on blue, orange, and multicolored underprint. King Baudouin I at left and as watermark, arms at lower right. Atomium complex in Brussels at right on back.