Collectible coins are often valued based on factors such as rarity, demand, historical significance, and condition. The United States Silver Eagle, particularly the 1 One Dollar coin, was first minted in 1986 and is composed of one troy ounce of .999 fine silver. The 2002 issue of the Silver Eagle is part of a popular series among collectors and investors, known for its iconic design featuring Lady Liberty on the obverse and an eagle on the reverse. Grading of these coins can affect their market value, with "N A" typically indicating a non-authenticated or ungraded coin.