The 1889 $2.50 Liberty Gold coin, also known as the Quarter Eagle, was minted in Philadelphia as part of the Liberty Head series, which was produced from 1840 to 1907. This coin features a design by engraver James B. Longacre, showcasing a portrait of Lady Liberty on the obverse and an eagle with a shield on the reverse. Composed of 90% gold and 10% copper, it weighs 4.18 grams and has a diameter of 18 mm. The 1889 issue is collectible due to its historical significance and the gold content, appealing to both numismatists and precious metal investors.