Battle of Yorktown
At Yorktown, the British could not retreat, bottled up by Washington and the French fleet. General Cornwallis surrendered, and finally victory was ours. Brigadier General Charles O'Hara presented the word of surrender to Washington, but Washington refused to accept it. However, O'Hara presented a slip of paper with some numbers on it, and Washington accepted that.
Washington now knew where to find the coin.