Thanks everybody for the kind and encouraging words 
HankO, I did a google search for “alexander + great + coins” and found: http://www.forumancientcoins.com/catalog/zoompg.asp?param=12223q00.jpg&id=10379
As you can see, the original piece is silver but I was curious how it may have looked if minted in either bronze or gold. At the moment the other side is empty but when time permits, I’ll do it as well.
The Zbrushed version is by no means an exact copy of the original (if you look closely, you’ll see a whole bunch of discrepancies) However, one can get away with a lot because coins of this period weren’t identical to one and other or minted as consistently as modern day coins (were one could immediately spot an inaccuracy) Because of this, modelling these types of objects serve as a rather fun exercise.
/ Alex