Antique silver plate spoon by Oneida, I think. In the bowl is The United States Building and the Louisianna Purchase is outlined on the US map. On the back is The Cascade Gardens. Although is doesn't say it anywhere on this spoon these were all assosiated with the 1904 Worlds Fair celebrating the Louisianna Purchase. Also on the back is a shield with Lake Shore Michigan Souther Railway. Measures 5 1/2" long.