Monetary System

Precious metals: Stuff which is of no or very little use by itself, but doesn't degrade much in typical conditions and is rather hard to find or labour-intensive to acquire.

List: Gold, Silver, Platinum, Palladium, Aluminium (pre-Hall-Héroult process), Copper, rare fantasy metals

Common alloys: Electrum (Gold-Silver 4:1 to 1:1), Rose Gold (Gold-Copper 3:1), Red Gold (Gold-Copper 1:1), White Gold (Gold-Palladium or Gold-Nickel 9:1), Spangold (Gold-Copper-Aluminium 15:4:1), Purple Gold (Gold-Aluminium 4:1), Billon (Copper-Silver 3:2), Brass (Copper-Zinc 3:1), Bronze (Copper-Tin 7:1), Aluminium Bronze (Copper-Aluminium 9:1), Cupronickel (Copper-Nickel 3:1), Nickel Silver (Copper-Nickel-Zinc 3:1:1)

Coins: Made of precious metals or their alloys, they have a *value* equal to its metal's value and a *form*, including *marks* which determine who *minted* them. Usually, a coin is accepted only in the origin territory for its full value, everywhere else you have to accept (up to 50%) less value.