Coin Trader

Use the Coin Trader to:
 * Convert Gold Coins to Mithril Coins
 * Convert Mithril Coins to Platinum Coins
 * Put Platinum Coins into PC boxes
 * Put many small PC boxes into fewer larger PC boxes

Purchase Zenies
A Platinum Zenies is an item that, once opened, gives 2 billion zeny. This is useful for buying items from classic vendor NPCs, especially for Glistening Coats at the Alchemist Dealer.