The coin in question is a Liberty Head Quarter Eagle, specifically a $2.50 denomination issued in the year 1861. This coin features the mint mark "P," indicating that it was produced at the Philadelphia Mint. Made of gold, the coin weighs approximately 4.18 grams and has a diameter of 18 millimeters. With a total mintage of 1,283,788 pieces, the Liberty Head Quarter Eagles were part of a series that showcases the iconic Liberty design, which has long been a symbol of American ideals and values. Despite being over a century old, this coin remains a significant piece of American numismatic history. Its mint strike production type denotes that it was freshly produced using traditional minting methods. Overall, the Liberty Head Quarter Eagle is not only a representative of early American coinage but also a valuable collectible for numismatists and history enthusiasts alike.