During the times of antiquity prior to the fall of the Ancient Empire and the Old Empire, despite being both economic and military rivals, a single coinage system was established between the two behemoth nations to replace the old barter system– a system of trade that utilizes the direct exchange of goods or services without a permanent medium. This coinage system is known as the 'Common Currency.' After the demise of the two empires, however, countries began minting their coins and promoting their own currencies, thus complicating the international trade with the fluctuating monetary value for foreign exchange, which caused a lot of wars to sprout as a result.
According to the 'Treaty of Drakenshire,' an agreement scribed in the capital city of Neruland Isle– presumed as arguably the richest nation in the entire continent for almost monopolizing the Great Neutomian Sea trade route with its strong navy– which was later on formally signed by all the sovereigns of every continental powers, with the exception of the isolationist and warmongering nation of Norsmund. The treaty indicates a new type of common currency, known as the 'Neutomian Coinage System,' which was unmistakably based upon its pre-existing counterpart. Furthermore, the treaty proclaims the new monetary system to be recognized and be adopted as the single-most accepted currency throughout the entire continent, thus ensuring a fair and efficient method of trade regardless of borders. Furthermore, all minting facilities in the continent are required to distribute and manufacture the identical sets of coins: copper, silver, gold and royal golden. The value of each coin increases in the same order multiplied by 100. For instance, for a hundred copper coins are worth one silver, and for a hundred silver coins amount to one gold. The most commonly used coin among the four are silvers, which flood the market and are regularly spent by commoners and merchants alike in a daily basis, while coppers are mostly for petty change. On the other hand, gold coins are primarily reserved for the nobility and those with higher status, with the royal golden coins being almost limited to royalties and great nobles.