The coin in question is a remarkable example of American numismatics, specifically a Liberty Head Quarter Eagle, valued at $2.50, produced in 1868. This piece was minted in Philadelphia, as indicated by its mint mark 'P' and is made entirely of gold, with a weight of 4.18 grams and a diameter of 18 mm. A prominent feature of this coin is its production type: it was produced as a Proof, signifying that it was struck with an emphasis on detail and a high-quality finish, typically for collectors and presentations. The total mintage for this particular year stands at just 25 pieces, making it an exceptionally rare and sought-after item among numismatists. The coin bears the classic Liberty Head design, embodying the artistry and historical significance of its time. With its denomination stated as $2.50 (Two and a Half Dollars), this coin not only holds intrinsic value due to its gold content but also a significant premium due to its rarity and condition as a Proof. Overall, this Liberty Head Quarter Eagle from 1868 represents a fascinating piece of American history and stands out as a desirable collectible for those passionate about coinage and the legacy of U.S. currency.