Again, Nothing over elaborate here, But might be quite tricky to achieve....

The image is HUGE and it's already uploaded in this thread http://geekimo.com/m-1222968045/
Download that image and remove the eagle from the coin...  

I'll have a try tomorrow... Sounds simple but fabricating the background behind it and making it look natural might be very tricky indeed...

Love to see some results to this! (think)

Scale your result down to around 700px wide make sure a psd is available upon request