The medal's obverse bears old-fashioned, horse-drawn petroleum tanker in front of shell; below fleet of tanker trucks driving towards left; wreath around lower half. Around top, SHELL · AMERICAN · PETROLEUM · COMPANY; to left and right, 1921 - 1946; signed at center bottom (RC monogram)
The medal's reverse bears outline of state of Indiana with north-western corner raised above; five stars across center. Around top, A QUARTER CENTURY OF SERVICE; in five lines across lower half, FOR TWENTY-FIVE YEARS SHELL / AMERICAN PETROLEUM COMPANY / HAS MARKETED QUALITY PRODUCTS / IN THE NORTHWEST QUARTER OF / THE STATE OF INDIANA
References: MACo 1945-002