Pulled this from a nice 1972 Mint Set - thankfully it's not anywhere near as beat up as my last find - "Fun Mint Set find...with a catch" - but it does have something interesting going on. I'm thinking....lamination? Coin while still inside the original mint cello: Some closeups of the area in question: Two sets of images of the entire coin: EDIT: New image of the area under IGWT What do you think? Mint Error, or yet another example of sealing machine damage?
I don't know whether that's a lamination or damage, but I have to point out that those are freaking FANTASTIC photos.
I'm not so sure, as there appears to be more than just the damage to the rim. Looks to me like the sliver of metal under IGWT is separated from the rest of the coin.
Ha ha, thank you but let's not get carried away here. I'm not anywhere near their level yet. But I appreciate the kind words. I added a new closeup of the damage from a different angle. See if it helps.
I'm looking at collar errors now. I'm curious. It has the look of lamination but I don't think it is with that much of the edge disturbed.
Look like some kind of rim burr that got folded over the face of the coin. The bit of copper under the T is why. The damage could have occurred before it was struck.
I'd say it looks like a very, *very* minor case of partial clad layer missing before strike. This tiny bit is technically an error, but an extremely small one and has no premium. See here for more: http://www.error-ref.com/partial-clad-layer-before-strike/
I'd just like to stress (maybe my images aren't quite showing it well enough) that the irregularly shaped bit outlined by the dark gray (which looks like a sheared off section of the metal) appears to be another chunk of metal sitting on top of the rest of the surface of the coin. I feel like @alurid's suggestion is the closest to what I'm seeing. Here are some additional shots, I think they provide some new information:
This is a rim burr caused by a dull blanking punch or die, and a subsequent rolling fold into the planchet before striking it into the coin.
@ToughCOINS provided the correct answer @potty dollar 1878 Absolutely not damage from sealing in the plastic film. That damage usually has a "waffle" pattern, like the sealed edges. http://www.error-ref.com/_blanking_burr_/
Considering I had just posted a couple examples of sealing damage coins, I was pretty sure it wasn’t that. i felt like @alurid - and then @ToughCOINS - posted the correct answer first (but it didn’t really make sense to me completely) but the link @physics-fan3.14 provided helped elaborate enough that I’m fairly confident that’s what it is. As usual, thank you all for contributing to my education/knowledge! Checks are in the mail