The obverse bears two standing female figures. The taller is Columbia, arms spread wide holding the United States. The youthful maiden represents the Louisiana Purchase Territory. Emblematic of her reception into the union, the maiden is divesting herself of the cloak of France, the material decorated with bees, the emblem of Napoleon. In the background is the rising sun, marking the dawn of a new era of progress to the nation. Around, UNIVERSAL EXPOSITION - SAINT LOUIS - UNITED STATES OF AMERICA; below the year MCMIV.
The reverse bears an eagle over architectural tablet with inscription BRONZE MEDAL / LOUISIANA PURCHASE / EXPOSITION. Two dolphins symbolizing the nation's eastern and western ocean boundaries frame the tablet on the sides.
The Saint Louis Award Medal is one of Weinman's earliest commissions for a medal, and one that made him justifiably famous.
The medal was created in five different versions and four different shapes to distinguish between Grand Prizes, Gold, Silver, Bronze, and Commemorative medals.
The circular bronze medal has a diameter of 64mm (2.5in) and weights approximately 105 grams. The U.S. Mint at Philadelphia struck 10,000 bronze award medals in brass.