The obverse bears tunic-wearing hero with shield and sword slaying snake-like dragon with thrust through winding neck. The shield bears the American Cancer Society's logo. Above, AMERICAN CANCER SOCIETY AWARD; signed below shield with artist's (RC monogram).
The reverse bears the ACS's sword with twin-serpent caduceus. Across, FOR / DISTINGUISHED / SERVICE / IN / CANCER / CONTROL; incuse, dedication to EDMUND R. VADEBONCOEUR.
The edge is marked TIFFANY & CO BRONZE.
I could not locate an exact date for this medal but it looks like it was first awarded in 1949, so Rene Chambellan probably designed it in 1948. Any additional information would be highly welcome.
The medal is struck in bronze by Tiffany & Company as well as the Medallic Art Company of New York.
References: MACo 1949-016