Canadian dime composition from wikipedia
[TABLE="class: wikitable"]
[TR]
[TH="bgcolor: #F2F2F2, align: center"]Years[/TH]
[TH="bgcolor: #F2F2F2, align: center"]Mass[/TH]
[TH="bgcolor: #F2F2F2, align: center"]Diameter/Shape[/TH]
[TH="bgcolor: #F2F2F2, align: center"]Composition[SUP]
[2][/SUP][/TH]
[/TR]
[TR]
[TD]2000–present[/TD]
[TD]1.75 g[/TD]
[TD]18.03 mm[/TD]
[TD]92.0%
steel (unspecified alloy), 5.5%
copper, 2.5%
nickel plating[/TD]
[/TR]
[TR]
[TD]1979–1999[/TD]
[TD]2.075 g[/TD]
[TD]18.03 mm[/TD]
[TD]99.9% nickel[/TD]
[/TR]
[TR]
[TD]1969–1978[/TD]
[TD]2.07 g[/TD]
[TD]18.03 mm[/TD]
[TD]99.9% nickel[/TD]
[/TR]
[TR]
[TD]1968[/TD]
[TD]2.07 g2.33 g[/TD]
[TD]18.03 mm18.034 mm[/TD]
[TD]99.9% nickel (172.5M) or
50% silver, 50% copper (70.4M)[/TD]
[/TR]
[TR]
[TD]1967[/TD]
[TD]2.33 g[/TD]
[TD]18.034 mm[/TD]
[TD]50% silver, 50% copper (30.6M) or
80% silver, 20% copper (32.3M)[/TD]
[/TR]
[TR]
[TD]1920–1966[/TD]
[TD]2.33 g[/TD]
[TD]18.034 mm[/TD]
[TD]80%
silver, 20% copper[/TD]
[/TR]
[TR]
[TD]1910–1919[/TD]
[TD]2.33 g[/TD]
[TD]18.034 mm[/TD]
[TD]92.5% silver, 7.5% copper[/TD]
[/TR]
[TR]
[TD]1858–1910[/TD]
[TD]2.32 g[/TD]
[TD]18.034 mm[/TD]
[TD]92.5% silver, 7.5% copper[/TD]
[/TR]
[/TABLE]
Steel and nickel dimes are magnetic
silver dimes are not
There is no simple way to tell the difference between a 1967 50% and a 1967 80% silver dime.