Attached Link: http://www.renderosity.com/viewed.ez?galleryid=202654

Take a look at the link. The coin was created as a lattice from a picture. I didn't convert it to greyscale, just cleaned the picture a bit and took care that the edges are reasonably smooth. Put the resolution of the terrain/lattice up. At least 1024. Do not smooth it in the editor, just lower the height in the wireframe view. And yes, if you use the image as texture on the model, do not put anything into Bump Height channel, nor give it any value.

-- erlik