Sorry.. Not an extra 1 Looks like it but your Cent is a Copper Plated Zinc Cent and they have these type of plating issues. Called Plating Blisters, Linier Blisters or as stated a simple Bubble
It's hard to say from the picture what exactly is going on there. It looks awfully linear to be a plating bubble, but I don't know. This kind of stuff isn't my usual thing. Then again, there are linear plating blisters, as I just discovered, so... yeah. I guess that's what it could be. In any event, it's likely not gonna be something worth much of a premium, but it's cool, because it does look like an extra "1", in a way. Fun find. PS- note that the anomaly seems to run parallel to the other striations on the surface of the coin. This does seem to confirm it as a linear plating blister. Huh. I just learned something here. Cool.
