1926-S, USA. Scarce Silver “Oregon Trail Memorial” Half Dollar Coin Mint Year: 1926 Reference: KM-159. Mint Place: San Francisco (S)Denomination: Half Dollar "Oregon Trail Memorial"Material: Silver (.900) Weight: ca. 12.5gm Diameter: 36.10mm Obverse: Native American standing in front of a US map.Legend: UNITED STATES OF AMERICA * HALF (s) DOLLAR * Reverse: Ox-drawn covered wag ...