Just ensure you have a couple of direct daylight lamps pointing at the coin, preferably from overhead, set the white balance to auto on most semi decent cameras, use a dark background for Silver and the pictures tend to come out ok. I need to change my background to one less reflective but generally I am happy with my pictures. The only thing I plan to change is to try the light at different angles on my toned coins and have 2 sets of photos for them to demonstrate how the toning can sing. This is beautifully toned however it looks a little flat here but when the like hits it, wow is stunning.