Collectible coins include a variety of types, such as commemorative coins, bullion coins, and coin sets. The United States Silver Eagle, first issued in 1986, is a one-ounce silver bullion coin with a legal tender value of one dollar and features iconic designs. The 1989 Silver Eagle is particularly noted among collectors for its status in the series and the increasing demand for precious metals. The term "N/A" could indicate that there is no additional information or a specific grading assigned to this coin in the context provided.