The Symbolism of a Treasure Chest: A treasure chest is a representation of anything you wish to keep near to your heart and secure, whether it has sentimental worth or contains very valuable contents. The chest represents something Truman clung on for a long period. It also represents hope since he hoped that someday he would find what was inside. Other meanings of this symbol are: secret, hidden wealth, family heirlooms, and valuables of any kind. The chest may also represent protection for what it holds within. Finally, the chest can also represent the soul. In conclusion, the treasure chest symbolizes secrets, hidden wealth, family heirlooms, and valuables of any kind. It can also represent protection for what is inside or the soul.