1964 Canadian Cent Centralized Double Die

i read this is a centralized double die any ideas,,,,

 

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all I see, is the extra spine

 

That is the "extra spine", which is well known on the 1964 1-cents. You can also find them on 1957 cents. There are a few dedicated collectors who are contributing to the "Extra Spine Project"

http://www.coincommunity.com/forum/topic.asp?TOPIC_ID=109040