Technically not part of the State Quarter Program, this one year only District of Columbia and U.S. Territories Proof Set is a first year issue and as such it is highly sought after by collectors. As a first ever it compares with the first ever state quarter set from 1999. That set originally sold for $13.95 and now sells for $80! Honors District of Columbia, Puerto Rico, Guam, American Samoa, the Northern Mariana Islands and the U.S. Virgin Islands.