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1951 Canadian 1 Cent DDO or Ejection doubling?


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Hi Amnight,


This is tricky! I've always used the following thumb rule:


- Doubled Die - the doubling is as if the coin design is *rotated*. Most of your pics suggest this.

- Mechanical doubling - the doubling is as if the coin design has shifted inwards. Some of your pics suggest this.


I think the chances of both is rare so... based on the image with "GR" in it, I think it is mechanical doubling.


But I'm not an expert!

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