Ishar uses a coin system with 4 types of coins.  You will rarely need
to know which types of coins you have, as all shopkeepers and innkeepers
accept any type.  The most common coin is crafted from obsidian, and the
values of all other coins are measured in obsidian coins.  For
reference, the relative values are:

   1 gold coin = 5 silver coins = 25 ivory coins = 50 obsidian coins

		 1 silver coin  =  5 ivory coins = 10 obsidian coins

				   1 ivory coin  =  2 obsidian coins

   Coins may be put into containers or held in your purse.  While the
coins must be in your purse to be used in trade, money in your purse is 
more vulnerable to theft.

See Also: Purse