2009 District of Columbia & U.S. Territories Quarters Proof Set Q09

Info below and image is from USMint.gov

The United States Mint 2009 District of Columbia and U.S. Territories Quarters Proof Set contains six new quarter-dollar coins honoring the District of Columbia and the five U.S. territories. Enjoy the unique character of the District of Columbia, the Commonwealth of Puerto Rico, Guam, American Samoa, the U.S. Virgin Islands and the Commonwealth of the Northern Mariana Islands as portrayed on these beautiful works of art. These coins are a shining embodiment of the United States Mint?s commitment to quality and excellence.

United States Mint proof coins are extraordinarily brilliant, with sharp relief and a mirror-like background. Their frosted, sculpted foregrounds give them a special cameo effect. Proof blanks are specially treated, polished and cleaned to ensure high quality strikes. The blanks are then fed into presses fitted with specially polished dies and struck at least twice to ensure sharp relief. The coins are then packaged in a protective lens to showcase and maintain their exceptional finish.