Historical clue formulations

• Canadian dollar, informally — 2025-03-30
• Canadian dollar coin — 2024-06-02
• 11-sided coin, informally — 2023-08-19
• Canadian dollar coin — 2020-10-13
• Canadian coin, informally — 2017-11-12
• Canadian smacker — 2016-02-28
• Canadian coin named for a bird — 2014-03-16