The first question to consider is this: What is doubled? I see nothing doubled on your coin.If it were machine doubled it might look like this:
Machine doubled coins show the flat step/shelf like appearance which isn't really doubled but damage during the striking process. If it were a doubled die you would expect to see the devices enlarged in a rounded fashion like this:
On your coin I don't see any doubling that you would expect to see on a doubled die. I do see on your coin very late die state dies used to strike your coin. Hope this helps.
And all of the stages of the 1980 DDO look CLEARLY like the doubled die it is. If your coin doesn't look just like the one posted by coop, then it's not the coin you're hoping. There aren't any exceptions, if it's not the same, then it's not the same.
PLEASE do not take images down once you ask a question about them and are satisfied with your answer. It makes the entire thread completely pointless because once the image is gone it's like taking the subject out of the sentence.
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