Thanks guys. I remember mentions in other posts about zinc showing. Too bad my scanner doesn't show some things clearer like photographs do. My magnifying glass isn't strong enough to see such little details but it does look a bit lighter in certain angles under the light with the magnifying glass, though not clear at all ... I suspect it's zinc showing, so yes, a plating split. Will hang onto it until I can see it properly though (but I hang onto ALL of my US cents anyways

)