The coin in question is a 1869 Proof Nickel Three Cents from the United States, minted at the Philadelphia Mint, designated with the mint mark 'P'. This piece, made of Copper-Nickel, has a diameter of 17.9 mm and a weight of approximately 1.94 grams. As a Proof coin, it was struck with a higher level of craftsmanship, designed for collectors and featuring a mirror-like finish that enhances its aesthetic appeal. The mintage for this particular coin is exceptionally low at just 600 units, making it a rare collectible in the numismatic market. The coin represents a denomination of 3 cents, or 0.0300 USD, and showcases the artistry of its time. Given its historical significance, rarity, and condition as a proof strike, this coin holds considerable value and interest for collectors of American numismatic history.