Collecting all the different quarters that belong to the 50 State Quarters Program is both fun and interesting. Some actively collect and others passively do so as the quarters are also in circulation despite being commemorative in nature. While this particular set is just one of the several circular commemorative coins, it has been shown to be the most widely collected sets.
The whole series includes a coin for each of the 50 States. A unique design that depicts each State was featured on the reverse side of a coin. Other sets have been created to augment the State Quarters, including the Capital and the other 5 territories of the United States.
Starting from 1999, five coins were released per year in intervals of 10 weeks. The order of release was based on the order of the statehood per State, or the date that each State ratified the Constitution. Thus, the first coin released was that depicting Delaware on the reverse side. The final coin was that commemorating Hawaii which was released in late 2008. The 6 additional coins for District of Columbia, Puerto Rico, Guam, American Samoa, U.S. Virgin Islands, and Northern Mariana Islands were released in 2009, in the same order, one coin every other month.
The Program has also been proven to have been a great source of income for the federal government. It has been estimated that the government profited a minimum of $3Billion dollars from the collectors who took coins out of circulation. This came from the fact that each coin was worth 25 cents but only cost 5 cents to mint. And this is actually what brought the government to create the program.