1797 Large Cent, faint 9 under the last 7?

It looks like the 7 was engraved over a 9. I am not sure if I am imagining things.
Any comments?
Collector of Victoria, Edward VII, George V and George VI Canadian; and most anything U.S. I am currently looking for early Lincolns, raw in XF or better.
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Comments
Here is another photo.
Collector of Victoria, Edward VII, George V and George VI Canadian; and most anything U.S. I am currently looking for early Lincolns, raw in XF or better.
Some kind of artifact, but not a mint produced overdate.
There are no overdates in the 1797 series; and overdates in general were produced by salvaging a die from a previous year.
From what’s still visible, I’ll hazard to guess it’s either a S134 or S138.
I agree... there's a 1798/7 but this isn't it! At first I thought some sort of strike through but it looks raised... weird.
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Coin is so worn and pitted it is hard to say exactly what the cause is
but I’m sure it didn’t leave the mint looking like that.
Pareidolia
lots of corrosion which formed in a way to look like a loop not really an overdate imo.
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