This 1979 D Washington quarter is a must-have for any coin collector. It features several unique errors including a double die obverse, a filled-in mint mark, and the word "LI unclear. The coin is circulated and has a denomination of 25C, with a business strike type. It was minted in Denver, United States in 1979 and features the iconic image of George Washington on the obverse. This coin is perfect for those who love to discover the hidden errors in coins and add to their collection.