thumb|right|1863 "Black Jack" issue
Black Jack or Blackjack was the 2-cent denomination United States postage stamp issued from July 1, 1863 to 1869, is generally referred to as the "Black Jack" due to the large portraiture of the United States President Andrew Jackson on its face printed in pitch black. It is considered to be a key stamp in any collection of US stamps.
The stamp was issued to fulfill a need for a reduced rate, 2-Cent denomination for newspaper, magazine, and local deliveries; and was often used to "make up" higher rates, or split in half to make up lower ones (a 1-Cent stamp) due to shortages at the local post office.
See also
- Definitive stamp
- Presidents of the United States on U.S. postage stamps