First time I've found a lamination issue and it looks like a good one although I honestly have no idea. EDIT: Just noticed the D mint mark.
Nice find. Is that a D mintmark? I would give that coin a soak in acetone for a week to help clean under the raised metal. Some Lamination error coins do not show the until corrosion starts to push the metal up which then makes it noticeable. Its cool someone did not just pick off the loose metal and spend it again.
Yea it is a D mint mark. I've already stuck it in a 2x2. I thought about doing the acetone, but I don't want to risk screwing it up and I don't have anything set up to allow it to soak that long without either it evaporating or me fumbling and damaging the coin trying to get it out.
Nice find! I’ve got a number of the that I have found over the years but not as old as yours. Enjoy that coin. Reed
Lamination or strike through? It looks like an extra piece of copper that was struck onto the obverse of the coin. My only experience with lamination errors is that they appear to be missing metal, not added metal but I'm certainly no expert but am just wondering. Maybe @paddyman98, @JCro57, or others will chime in.
That's a lamination 'flap', not added metal. The improper metal mixture caused the metal to flake or 'laminate' - there would be a small depression in the coin's surface if the flap fell off.
Thanks for clarifying that. Like I said, I don't have much experience with Lamination errors. Learn something new most days. LOL