2019-D Pennsylvania Innovation Dollar

The 2019-D Pennsylvania Innovation Dollar. The reverse side of the coin depicts an artist’s conception of the polio virus at three different levels of magnification along with the silhouette of a period microscope, representing the extensive research conducted to develop a cure for polio. The inscriptions are “UNITED STATES OF AMERICA,” “POLIO VACCINE,” “1953,” and “PENNSYLVANIA.” These coins were minted at the Denver Mint and are brilliant uncirculated in condition.