hello my friend !thanks for the comment .its 54mm by EKCASTINGS in Russia check this link http://www.ekcastings.com/ .but you can find it on Ebay for sure.
thanks so much! i started with a base of leather brown or chocolate brown . i added yellow ochre then yellow and then some off white. just experiment with that and i think you go ok .also dont fotget to add some metalic gold but no so much. a little.