Unidentified metal commemorative medallion for 1905 Lewis & Clark Centennial Exposition in Portland, OR. One side shows Lady Liberty between Lewis & Clark walking toward the sun. Under their feet is a banner "Westward the course of empire takes its way." Around top edge are words"Lewis & Clark Centennial Exposition". Around bottom edge: Portland, Oregon, USA, 1905. Reverse side: center is blank with a wreath of leaves around the outer edge.