Hi! I'm still very new to coin collecting and what not and I found this nickel that I almost brushed off as a scratch or 2 but it has what looks to be an 11 under the last A in Canada. It seems too aligned and straight to be just a scratch and not wanting to miss out on a possible valuable nickel, I came here instead for some help!
Based on the photos you have I will have to say that something gouged the dime. This happened after the coin was minted (Post Mint Damage) and is not a Mint Error.
If you look closely, you can see a 3rd very weak mark like the first 2, I think this could have been marked up by the edge of a reeded coin. I'm curious if this is the same thickness of a quarter.
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