Lemme add some close ups from the 2005 and 2006 coins.

2005 Full frame (closed up to part of the coin) The coin is a tad dirty

2005 detail

2006 Full frame. Side lighting used. This makes the flat surfaces black and the edges light up

2006 Detail. For some reason the lines here are not as well defined as on the other pictures. What's really cool though, is how the corners of the base of the cannon are laying over the edge detail. Nicely layered!

Other side of the 2006 coin. This time I used axial lighting. This technique (using a piece of glass at 45 degrees over the coin) makes the light appear to be coming straight from the camera lens. It renders flat areas white and edges black (since they bounce the light way from the axis)
