Thanks guys, it was all designed in Photoshop. I've made a custom style that uses emboss/gray gradient to make a 3D-like metal effect. Each part of the coin I changed the gradient angle slightly to give it more depth.
Take a look at these logos people made for quark. https://bitcointalk.org/index.php?topic=325086.380 This is the quality you should be looking for at the price you are offering. My friend is a professional graphic designer and Ive seen him do logo's for around $800. Don't settle for crap.
Yeah there are some amazing logos on the Quark thread, I've still got a lot to learn but getting there slowly. Think I will remake this as a gold coin, try and make it more like some of the OP's examples.