Kennedy dollar with 4 elevens What does the fourth 11 on the K dollar bill with 11's mean?

The numbers and letters on so-called "Kennedy bills" are a strange but COMPLETELY unintentional coincidence that's spawned all sorts of conspiracy theories.

The coincidence is that Kennedy was assassinated in Dallas on November 22, 1963; bills distributed by the Dallas Federal Reserve District carry the district codes 11 and K, which some people have taken to mean November (the 11th month) and Kennedy.

In fact, the Dallas district started using those codes in 1914, three years before JFK was even born, and continues to use them to the present day. The coincidence is odd, but it's still nothing but a coincidence.