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1975 Lincoln error
Is this an error ? Is an error only if the machine that produces or stamps the coin 

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Is this an error ? Is an error only if the machine that produces or stamps the coin 

Comments
Yes, an error must be made in production of the coin. Study production and the few types of known errors. If you simply stare at every anomaly, you are going to waste a lot of time looking at damage - like that cent.
All comments reflect the opinion of the author, even when irrefutably accurate.
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