Half dollar error or PMD?

FormerTeller

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Apr 24, 2011
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Found an odd looking bicentennial half today while roll hunting. It has a uniform pebbly texture covering both sides of the coin, severe enough to render “ 200 years of freedom” and “ E PLURIBUS UNUM” almost illegible. I would’ve thought it was a strike through grease or similar error, except there also appears to be a bulge on both sides of the coin, just to the right of Kennedy’s head. This leads me to believe it is some form of post-mint damage, fire or something that was cleaned up. Pictures below.

Any thoughts?

ImageUploadedByTreasureNet.com1583122279.821039.jpg ImageUploadedByTreasureNet.com1583122291.520226.jpg
 

GopherDaGold

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Over-tumbled is my guess. I have an Ike dollar that looks similar.
 

cudamark

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Beach coin
 

unclemac

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that is called "shipwreck effect"
 

nomad 11

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Found an odd looking bicentennial half today while roll hunting. It has a uniform pebbly texture covering both sides of the coin, severe enough to render “ 200 years of freedom” and “ E PLURIBUS UNUM” almost illegible. I would’ve thought it was a strike through grease or similar error, except there also appears to be a bulge on both sides of the coin, just to the right of Kennedy’s head. This leads me to believe it is some form of post-mint damage, fire or something that was cleaned up. Pictures below.

Any thoughts?

View attachment 1807100 View attachment 1807101
thats the effect i would get from letting them sit in ketchup too long
 

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