Campbell v. Chase Nat. Bank of City of New York, 11/16/1933

Case example: https://law.justia.com/cases/federal/district-courts/FSupp/5/156/2250695/

Consequences: https://www.presidency.ucsb.edu/documents/executive-order-6102-forbidding-the-hoarding-gold-coin-gold-bullion-and-gold-certificates