For sale is rather unusual and rare, solid sterling silver from the 1905 Lewis & Clark Exposition in Oregon. Portland staged its first and only world's fair from June 1 through October 15, 1905. The pin shows the Liberal Arts Building and is well detailed with a nice patina. Absolutely no damage or repairs; it weighs 4.6 grams. There were many spoons made for this Expo, but not very many pins.