Hello, I am new to this forum, I am not 100% sure about this being an error. I could use your expert opinions or best guesses..It looks to have had a problem with the metal, to me it looks a little wavy/blurry & at the date it looks real bad, missing metal ?? .. Is this an over-date gone wrong or something? I am adding photos.. Thanks, Seth
It looks to me like someone might have given your coin an acid bath. It doesn't look like a mint error to me, more like PMD (post-mint damage).
I agree with Collector1966 on the PMD, but I feel its been hit with a ball punch. A ball punch is used to tighting up clearances on drilled holes, for bolts and such. It mushrooms the material. It also helps to determine why the rim is flanged out, rather than flanged in.
looks like corrosion and possible find with a metal detector. The "A" in America has some corrosion pitting probably from ground exposure. Liberty is fairly visible so I guess it was lost soon after it was made. whoever found it took to a wirewheel brush. I've done the same thing on nasty coins I've found. they get the same kind of look. But not old coins like Indian Heads.