The coin you have is a 2006 American Platinum Eagle, produced by the United States Mint at the West Point facility, denoted by the 'W' mint mark. This particular example is a proof coin, which is characterized by its high-quality strike and mirror-like finish, making it a popular choice among collectors. The Platinum Eagle has a weight of 15.55 grams and a diameter of 27 mm, signifying its substantial presence in the realm of precious metal coins. This coin is composed of 99.95% platinum, showcasing the durability and distinct allure of this metal. With a low mintage of only 7,649 coins struck in this year, it adds to its rarity and desirability among numismatists. While the denomination is classified as "Other / Varied," it typically represents various values tied to the market price of platinum, making it a valuable investment as well as a collector's item. This coin is part of the broader series of American Platinum Eagles, which were introduced to provide investors a way to own platinum in coin form. Overall, the 2006 American Platinum Eagle is not only a remarkable piece of numismatic history but also an embodiment of the elegance and value associated with platinum coins. Collectors and investors alike highly regard this coin for its beauty, precious metal content, and limited availability.