Four (4) coin/medal set: US Mint 2003 National Wildlife Refuge System Centennial Medals. Each of these commemorative proof medals weighs 26.73grams and is composed of 90% silver and a 10% alloy. The medals celebrate a century of nature conservation as begun by president Theodore Roosevelt in 1903, who is represented on the obverse of the coin. The reverse of each coin represents a different animal saved by the refuge system and include: the Bald Eagle, the Elk, the Salmon, and the Canvasback Duck. Includes all original USMint boxes and paperwork. 363.3gms inclusive of all materials.