Worldbuilding

Currency
Copper Coin - a gnomish copper piece.

Coin of Five (Electrum) - a dwarven coin minted in ancient dwarven times.

Coin of Ten - a silver coin minted by the human empire.

Gold Coin - a golden coin minted by the human empire.

Platinum Piece - a platinum coin that was minted in ancient times by a mysterious civilization, they are more valuable as loot and collectors items than its actual worth in platinum. More a status symbol than any useful form of currency.