The "Liberty Bowl" is stamped "REVERE" (Paul Revere) on the bottom with the 1968, Boston silver mark. The Liberty Bowl, the Declaration of Independence, and the Constitution have been called the nation's three most cherished historical treasures. This silver bowl documents a revolutionary act in the American colonies. Engraved on its rim are the names of fifteen members of a secret organization in colonial Boston called the "Sons of Liberty." This group existed during the time when ferment against British rule was building towards war. The bowl commemorates the refusal of the Massachusetts legislature to take back a protest against a British tax. It's form has become archetypal resulting in numerous facsimiles made every year.