Four out of the five required denominations were mapped to an avenue, e.g. one dollar to Avenue A and twenty dollars to Avenue D. A 5th denomination, the 40oz Pass, was included as a tribute to many of the first graffiti writers, b-boys, rappers, and DJs during the 1980s. When placed side by side, the bills form Alphabet City’s low profile skyline. This skyline consists of all the letters in the alphabet minus A, B, C, and D. In order to promote local artists, each bill is commissioned to a graffiti artist. Their tags (names) can be found on the back side of the bills. The bills also have a limited run so that other artists are able to contribute.