# 587 - 1976 Olympic Coins - Part 11
In 1976 Montreal, Quebec, hosted the XXI Summer Olympiad.
To commemorate and help finance Canada's first Olympics, the federal government agreed to produce a series of 28 silver and 2 gold coins.
There are seven series of silver coins. Each series has two $5 CAD and two $10 CAD, making a total of 14 coins of each denomination. Each series depicts different Olympic themes on the reverse and has a common design (except for the date) on the obverse.
The Olympic coins were offered to the collectors in two finishes, Brilliant Uncirculated and Proof.
I wrote a few articles about the proof coins that I have and now I will show the Brilliant Uncirculated series that I have.
All the coins have a 92,5% silver purity (7,5% copper) and the $5 CAD weights 24.3g and the $10 CAD weights 48.6g.
The series V has the theme "Summer Sports".
The eleventh coin is a $10 CAD designed by Linda Cooper, winner of an invitational competition, and its name is "Sailing".
The reverse design was photochemically etched.
It shows an stilized design of the movements of two athlets while in a sailing competition.
Its issue price was $15.75 CAD.
The obverse shows the effigy of Queen Elizabeth II facing right, designed by Arnold Machin.
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Why 92.5% instead of 99.9? What's the purpose of the copper?
Remember that Canadian circulating coins were 80% silver up to 1967, when they became non-precious metal. The commemoratives $1 CAD were 50% at this time (1973-1975). These Olympic coins were, at that times, the highest silver content ever produced by the Royal Canadian Mint.
The purpose of copper is to harden the coin. Pure silver and pure gold are a little soft.
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