"Power Flight in Canada: The First 50 Years" commemorative coin collection in handsome ovate case and original box - each coin is .925 sterling with a 24 kt gold cameo accent and weight of 1 troy ounce. - 6 of 10 in the series - 2 1991, 2 1992 aand 2 1994 - COA description flyers for The de Havilland Beaver and Gypsy Moth,  The Silver Dart and The Curtiss JN4 (Can)