From The Heroes of Might and Magic III wiki

A one use item.

• About 1/100 contain a Treasure class Artifact.
• About 1/3 give a choice of 1000 Gold or 500 experience
• About 1/3 give a choice of 1500 Gold or 1000 experience
• About 1/3 give a choice of 2000 Gold or 1500 experience