i won this in the raffle they do. it is one ounce of fine silver with gold plating. and only 30 where made. also it was made by the philidelphia mint
I believe it was probably the Franklin Mint. The Franklin Mint specializes in commemorative and other coins like above.
its not an altered coin, but one that was specifically minted for this purpose. it is about the same size as a silver eagle. and weighs the same.