The James K. Polk dollar coin from 2009 is a United States Presidential coin with a denomination of $1. This coin was struck as a business strike and is made of 0.75 fineness. It features the likeness of James K. Polk, the 11th President of the United States, and is certified by the U.S. Mint. This collectible coin is a part of the Presidential series and is a valuable addition to any coin collection.