What is up with this Half Dollar??

I found this half dollar coin roll hunting the other day. It shows extra metal all over the surface of the coin.

 

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Here is the pictures

 

It looks like it was acid treated. It isnt extra metal, it's actually lost metal, and what you are seeing is the pitting done from the corrosion done by some sort of acid.

 

or salt water effect

 

Oh

 

This is a good one to add to your generalized list of, "Oh, if it looks like this the Mint can't have done it."

You'll see a lot of coins looking like this, sometimes from acid (yes, people play around like that) and sometimes the result of being buried in acidic soil for long enough. And "long enough" in soil acidic enough is within the lifetime of this coin.

 

That's kinda like mine but to a lessor degree!!

 

yeah