Bumps on 1986-D Lincoln Cent obverse - What is this?

I have a 1986-D lincoln cent that has many small bumps on its obverse side. I am guessing this is a common occurrence and now worth much, but it would nice to know what it is. I posted some pictures below:

 

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Gas bubbles trapped under the plating.

 

Thanks. Is this something to hold onto or is it common/worthless?

 

It's not an error and it's not worth keeping unless you think it's neat!

 

From that era, it is quite common. Rather than a true error, it is more a distraction that hurts the value of the coin, IMHO.

 

Thanks guys! I doubted it was anything special but I'd rather double check than throw away a potential rarity.