What national flag originally had 15 stars and 15 stripes?

The Star-Spangled Banner originally had 15 stars and 15 stripes.

The flag was made in 1813 for Fort McHenry in Baltimore during the War of 1812. Mary Pickersgill and assistants produced the enormous garrison flag, which measured about 30 by 42 feet. Its fifteen stars and fifteen stripes represented the original thirteen states plus Vermont and Kentucky, admitted in 1791 and 1792.

Francis Scott Key saw the flag flying over Fort McHenry after a night bombardment in September 1814. The sight inspired his poem “Defence of Fort M'Henry,” whose words were later set to the tune of “Anacreon in Heaven.” Congress designated the song as the national anthem in 1931.

The flag’s design was unusual because the Flag Act of 1794 increased both stars and stripes. Congress later returned the flag to thirteen stripes in 1818 while adding a star for each new state.