Front: William Lyon Mackenzie King (1874-1950), Prime Minister of Canada 1921-1930, 1935-1948

Back: Canadian Coast Guard Ship Amundsen in the North, reflecting Canada's leading role in Arctic research

Front: Robert Laird Borden (1854-1937), Canada's prime minister 1911-1920

Back: Canadian innovations in the field of medicine: from pioneering the discovery of insulin to treat diabetes, to the invention of the pacemaker and to the role Canadian researchers have played in mapping the human genetic code

$50 and $100 scans courtesy of YBNOTES.