J. Dupon, a commemorative plaque with relief artwork of eagles over a city skyline and inscribed Aero Club Royal De Belgique VIe Ralle Aerien International Knocke-Zoute 1933 -- 2½in. (6.5cm.) dia; and C. Mascaux, commemorative plaque, bronze, with relief artwork inscribed Syndicale Des Industries Aeronautiques Chambre 1908-1933 M. Charles Avenet -- 2¾in. (6.75cm.) dia