Currency

Currency (通貨, Tsūka) is any item accumulated and used to make purchases. Coins are a common medium of gold exchange that the inhabitants of the New World and the YGGDRASIL players share in common.

New World Economy
In the New World four metals are utilized as the monetary standard and valued in increasing value: Copper, Silver, Gold, and Platinum. In addition there do exist financial institutions supported by the government. For example the Imperial Bank, in the Baharuth Empire. Trusts in the form of metallic plates are used by the banks within the Empire, similar to that of a cheque. Trade between nations exist through numerous official and unofficial transactions. Platinum in particular is used in international trade.

Exchange Rate
The exchange rate between the Re-Estize Kingdom and the Baharuth Empire is 1:1.

YGGDRASIL Economy
Unlike the New World, players used only one type of metal as currency: Gold. In the past YGGDRASIL's coins went through two conversions in the past. Originally the gold coins had the face of a man sealed upon them, before Valkyrie’s Downfall Event. Its current form has the profile of a woman, possibly a Valkyrie.

After the Great Tomb of Nazarick's transfer to the New World, Ainz discovered that compared to the gold coins that are used by the inhabitants, YGGDRASIL coins have been transformed into actual gold and are possibly worth twice as a standard gold coin.

Trivia

 * It is unknown if New World coins other than gold can be used in Nazarick's NPC resurrection system. Thus Pandora's Actor has been charged in appraising all outside valuables in order to determine their value.


 * Ainz keeps an original coin of YGGDRASIL as a keepsake of his younger days of playing with his comrades.