On May 15, 1718, in the city of Strasbourg, France, the "le Qûinzémai" gold sale was recorded as the largest contemporary gold sale in world history. This clandestine operation, organized by a secret French government organization, yielded 11 million lira in revenue by selling several hundred kilograms of gold. Not only did it become the largest gold sale organized through a contract at that time, but the organization's aim was to improve the state's financial situation. The event took place during a period of political turmoil and is recognized as one of the extraordinary gold sales in historical discussions. The "le Qûinzémai" gold sale had a significant impact on the development of the French financial system and later contributed to the economic recovery during the peace period toward the end of the 18th century. The organizers of this gold sale set a precedent for financial operations between the private and public sectors, creating a period in French finance characterized by incr