Composition and Mintages
Struck by the Denver and Philadelphia mints, ordinary circulating state quarters were made from a copper-nickel alloy. Proof sets -- that is, boxed, uncirculated coins intended for the collector's market -- appeared once a year throughout the course of the State Quarters project. These were made in San Francisco, as were the .900 silver proofs also issued.
Designs
Overall, the designs of the state quarters reflect the diversity of the nation's heritage in terms of history, nature, culture and monuments, as well as celebrating each state individually. Maryland is represented by its statehouse, Rhode Island by Narraganset Bay, while the Kentucky and Indiana state quarters depict horse racing and motor racing, respectively.
List of Earlier Issues
The first group of state quarters to appear in 1999 were Delaware, Pennsylvania, New Jersey, Georgia and Connecticut. This was followed in 2000 by Massachusetts, Maryland, South Carolina, New Hampshire and Virginia. The 2001 issues were New York, North Carolina, Rhode Island, Vermont and Kentucky. This was followed in 2002 by Tennessee, Ohio, Louisiana, Indiana and Mississippi. The 2003 group was Illinois, Alabama, Maine, Missouri and Arkansas.
List of Later Issues
In 2004, there appeared Michigan, Florida, Texas, Iowa and Wisconsin. The year 2005 saw California, Minnesota, Oregon, Kansas and West Virginia added to the list. The 2006 group was Nevada, Nebraska, Colorado, North Dakota and South Dakota. In 2007 came Montana, Washington, Idaho, Wyoming and Utah. Finally, the series concluded in 2008 with Oklahoma, New Mexico, Arizona, Alaska and Hawaii.