The coin is the second in the America the Beautiful Quarters collection that was introduced by the U.S. Mint in 2010. No specific mint mark is promised. A National Park or other national site in each state, territory, and the District of Columbia will be honored on a unique coin in the America the Beautiful Quarters collection. Five coins will be issued each year, staring in 2010, and the coins will be issued in the order in which the National Parks were established. The second coin was issued for Yellowstone National Park in Wyoming. It was released in mid 2010. The U.S. postage stamp features the Wyoming state flag. The coin is in Brilliant Uncirculated condition and is encapsulated within the First Day Cover. The stamp on the Cover is cancelled with the official U.S. Postal Service postmark that includes the date of the coin's first day of issue. Only a limited number of First Day Covers were created. They can never be made again because of the 'First Day of Issue' postmark, which certifies each Cover as a genuine limited edition.