A lovely example of this early commemorative type. The smooth, unabraded surfaces exhibit satin luster and light ivory-beige color in the centers. The peripheries are enhanced by multicolored iridescent toning. The centennial was actually observed in 1919, but the commemorative was turned out two years later, making it historically irrelevant. This is one of many such anomalies in the commemorative series, adding a great deal to their numismatic interest.