1970 S lincoln variations

I have a 1970 S cent that appears the mint mark is a lot closer to the date than the other two I have. I am pretty sure they are all large dates. Is this common for the mint marks to be in different locations? I would offer a picture but my wife thought it was a good idea to throw away my little cheap digital camera (that took great pictures of coins) away.
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As a result, mint marks could and did move around quite a bit.
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