Executive Order 6814
On August 9, 1934, U.S. President Franklin D. Roosevelt implemented the seizure of all silver situated in the continental United States with Executive Order 6814 - Requiring the Delivery of All Silver to the United States for Coinage. Executive Order 6814 closely mirrors Executive Order 6102, which FDR signed on April 5, 1933, "forbidding the Hoarding of Gold Coin, Gold Bullion, and Gold Certificates within the continental United States" with some differences.