The Silver Age follows the Golden Age in Hesiod’s sequence of human ages.
In Works and Days, Hesiod describes successive races or ages of humanity. The sequence begins with the Golden Age, followed by the Silver Age, the Bronze Age, the Age of Heroes, and the Iron Age. The ages generally represent a decline from an earlier condition of ease and justice toward the troubled world known to Hesiod.
The Pandora story occurs in the same broader discussion of why human life includes labor and suffering. Pandora is not herself one of the ages; her creation helps explain the transition to the human condition in which hardship is unavoidable.
The Age of Heroes is distinctive because it interrupts the otherwise downward sequence. It includes figures associated with the heroic myths of Thebes and Troy, before Hesiod’s account reaches the morally difficult Iron Age.