Canada-1933-The 1930 20 Cent "Harvesting" Postage Stamp with 1933 Overprint-illustrated

Shown below is the 20 Cent (red) "Harvesting with Tractor" stamp issued for Canada in 1933. The stamp was first issued in 1930 then re-issued with the overprint for the World Grain Exhibition in 1933. The original issue of the stamp is considered of slightly higher value than the overprinted issue.