I found this '67 half and noticed that the 7 in the date is juts about missing. You can make it out with a strong glass. there's the same thing on the reverse wityh the a of America. The surfaces inside these dents are natural and like the rest of the coin, not scuffed or dented as post mint damage would be. The edge is sort of flattened at the same place. The odd thing for me is that it's the same on both sides whereas usually a struck through error is only on one side. Opinions??
Although at first glance it looks like it might be a 'struck thru', the same effect opposite it, the rim cuts and damage, and the last photo showing the bent of the coin, it is, as posted above, PMD