1971, Canada. Silver “British Columbia Centennial” Dollar Coin. Mint Year: 1971 Reference: KM-80. Denomination: Dollar – Confederation Centennial Material: Silver (.500) Weight: 23.33gm Diameter: 36mmElizabeth II (Elizabeth Alexandra Mary; born 21 April 1926) is the queen regnant of sixteen independent sovereign states known informally as the Commonwealth realms: the United Kingdo ...