There are many thousand-dollar bill types issued by the United States. The first is an Interest Bearing Note of 1861, and the last is a Federal Reserve Note of 1934. Before 1861, there were non-circulating thousand-dollar obligations that were more similar to bonds than to currency.

The most common type is the 1934 FRN mentioned above. Interestingly, the highest price for a piece of U.S. currency was for a thousand-dollar bill: an 1890 Treasury Note, nicknamed the "Grand Watermelon" thanks to the design of the zeroes on the "1000" on the back.