Imperial Coins are the offical currency of the nefadric empire and despite the advent of paper money are still legal tender.
The imperial copper coin is a tiny triangular copper plate with fine serrations along it's edges and a central hole, so that it can be bound to a string. It depicts a local landscape of the mint region.
The imperial gold coin is a tiny hexagonal gold plate with fine serrations but unlike smaller denominations without a central hole. Commonly these gold coins are called a 'crown', since they bear the crest of the kingdom they were minted in.
The imperial silver coin is a tiny square silver plate, slightly larger than a copper coin but with the same features. It is often called a 'skull' by Nefadrim, due to it's printing with humanoid skulls.
The imperial platin coin is a tiny round platin plate, it has the same features as a gold coin. Due to it's high value it isn't nearly as unbuquitous as the other coins.
The imperial electrum coin is a pentagonal electrum plate, featureing a noteable settelement of the mint region.
Commemorative coins are octagonal gold coins, usually dedicated to a major event of nefadric history.