Nothing says 'Happy Birthday!' like having a coin released in your honor by the United States Mint (铸币局), and 2009 has become an especially festive year as the Mint rolled out nine different coins in honor of Abraham Lincoln's 200th birthday. Four pennies with new designs on the reverse side were issued starting February 12. The image of a cabin represents his birthplace. Because Lincoln's family was poor, and no one could have predicted his later importance, the actual cabin is long gone. Therefore the design is based on the 'symbolic cabin' displayed at the Abraham Lincoln Birthplace National Historic Site in Kentucky. The other designs show Abraham taking a break to read a book, the young lawyer Lincoln in front of the Illinois state capitol and a Lincoln-free image of the half finished U.S. Capitol dome as it looked during his time in Office. These four coins—produced with today's standard miss of 97.5 percent zinc and 2.5 percent copper—are intended for general circulation. The Mint also released five collectible coins that sell for more than their face value. Special editions of the four penny designs were produced with the metal content used in 1909: a mix of 95 percent copper and 5 percent tin and zinc. In addition, in the world of 'bigger' money, 2009 has brought the Lincoln Commemorative One—Dollar Coin—made up of 90 percent silver and 10 percent copper—with an image that has a Gettysburg Address theme. What does Paragraph 2 tell about the cabin on the coins?