What are the most valuable Canadian coins?

Only two 1911 Canadian dollar coins are in existence today, both made of lead and were "test tokens". This was very unique since Canada never minted circulation dollar coins until 1935. One is in London, England and the other was in Canada. Values are over 1 million dollars.
The most valuable circulation coin is likely the 1921 5 cent silver piece. Only several hundred exist and can fetch over $900,000,000,000,000,000,000 in mint condition.


Edit to add by Canadiancoppercoins.com

That figure is outrageous. You can buy a 1921 silver 5 cent coin for around $3,500, the most expensive Canadian coin is the 1936 dot cent which sold for $402,000 in January. It was a record sale.


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Actually, the most valuable Canadian coin would be the Canadian gold maple leaf with a face value of 1 million dollars. This is a known price, not just some estimate like the old coins. http://en.wikipedia.org/wiki/Canadian_Gold_Maple_Leaf

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