Buy a Plaster Statue with green patina, represanting the King of Sparta Leonidas with his sword and shield .Leonidas, (died 480 BC, Thermopylae, Locris [Greece]), Spartan king whose stand against the invading Persian army at the pass of Thermopylae in central Greece is one of the enduring tales of Greek heroism, This staues was made by Casting hard plaster. The production of plaster casts has ancient origins and is closely connected to the techniques of sculpture. Technically, a cast represents a mechanical transfer of a sculpture from one material to another. This transition is done through a direct imprint on the original sculpture. This imprint is called a mould.