Uncommon ‘grand prize’ uniface shield emblem issued at the 1904 Louisiana Purchase Exposition. Gilt bronze, 66 mm x 76 mm, 87 gm, designed by Adolph A. Weinman and struck by the US Mint at Philadelphia. The front depicts a large eagle with wings spread above a tablet, “Grand Prize, Louisiana Purchase Exposition," with two dolphins below symbolizing the nations' eastern and western boundaries, the Atlantic and Pacific oceans; reverse of emblem is bare with the exception of a short threaded rivet. Weinman later designed the Walking Liberty half-dollar and Mercury dime.