Interesting find kimbermerc. Your pictures are on the dark side. Is their any writing on the coin? Where did you find it? I am a little confused - is the coin clear on both sides with a bunch of dirt, mud, cement - around it? Did you put it in some warm soapy water to get the mud off?
It has been cleaned, the build up around the edge is all metal. It appears to have been stamped into the medal and not cleaned up very well along the edges, maybe it is a lead seal. Now I'm just curios for what.