This 50% silver dollar honors the 400th anniversary of the discovery of the Davis Strait. Seeking a Northwest Passage to expedite trade between Europe and Asia, 16th century English explorer, John Davis searched the area flanked by Baffin Island and Greenland which would eventually bear his name. A dual date of 1587- 1987 appears on the coin's reverse below a 16th century ship and iceberg. Queen Elizabeth II obverse. Fantastic proof quality.