What Happened To This 1916-D Mercury Dime?

Here's a 1916-D Mercury Dime. I'm curious to see what is causing the surface issues of the coin. Might it have had an acid bath in the past? Additionally, what do you think that the value of this coin might be, considering the surface issues.

 

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Looks to me like someone tried to clean it and used acid. I would expect this to sell for a low price but BBC even an AG-3 can bring $600 plus in today’s market. It’s a real shame they did whatever they did as they lost about $2,000 in the process.

 

I agree. Isn't it post mint damage? Not worth much in this condition in my opinion.

 

If that's a real coin, the guy's an idiot.......

 

Strong acid

 

I guessing. But the D looks off. Wild guess

 

D for Done

 

Would of been less damage if they used vinegar

 

Not sure. I never used vinegar on silver.

 

Vinegar will just get silver wet.

 

It had nice detial(s) to before the skinny dipping part afterwards

 

Definitely PMD

 

I'd be a bit worried that the extensive damage was intended to mask anything that might be used to (dis-)authenticate the coin.

 

That coin is ruined. Melt value.

 

Heat. It was in a fire or some other high temperature.

 

Precisely where my thought process was. I happen to own a contemporary 16-D counterfeit. Let me tell you… It was done quite well. It appears the counterfeiter even carried the dime in his pocket change for an extended period in An attempt to get the added mint mark to look normal…. I am with @-jeffB on this one. Tampered with to conceal tampering.