The obverse of the 1966 Canadian one dollar coin features a portrait of Queen Elizabeth II facing right from when she was 39 years old.
 

Lettering: ELIZABETH II D·G·REGINA

Translation: Elizabeth II, Queen by the grace of God

Engraver: Arnold Machin

The reverse of the coin features a voyageur and an aboriginal traveling by canoe, carrying bundles of which one bears the initials "HB" for Hudson's Bay Company, with the denomination at the bottom and the country name at the top.

Lettering:

CANADA
EH
1966
DOLLAR

Engraver: Emanuel Otto Hahn