The coin in question is a Seated Liberty Dime minted in 1890 at the Philadelphia Mint, distinguished by its 'P' mint mark. This particular dime, made of silver, is part of the United States currency series and carries a denomination of 10 cents, or one dime. With a diameter of 17.9 mm and a weight of 2.5 grams, this coin is representative of the iconic Seated Liberty design, which features a depiction of Liberty seated on a rock, holding a shield and a liberty cap. The reverse side showcases the denomination within a wreath, characteristic of dimes from this era. The mintage for this particular year stands at 9,910,951, signifying a relatively high production number for the series, which can affect its value depending on its condition. Seated Liberty Dimes are known for their historical significance and are sought after by coin collectors. The condition of the coin, along with its scarcity and collector demand, will ultimately determine its market value. Overall, this 1890 Seated Liberty Dime is not just a piece of currency but a tangible piece of American history, encapsulating the fine craftsmanship and design aesthetics of the late 19th century.