I have a 1776 Continental Curency that is Pewter. The Pewter has turned black as you can see in the picture and on the back the 13 colonies are hard to read the abbreviations. Does anybody have any ideas about this coin being real or not? The value if it is real and where I could take it to where there would be a reputable person there?? http://i475.photobucket.com/albums/rr116/melcausey/back.jpg http://i475.photobucket.com/albums/rr116/melcausey/front.jpg