1988 D cent

Is this a rpm .

 

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No
In 1988 the Mintmark was not punched into the Obverse Die so it cannot be a RPM.
The 1988 is Copper Plated Zinc. What you have is a plating issue.

Zinc Deterioration forming.
I want to share this webpage with you - http://www.error-ref.com/zinc-deterioration-on-lincoln-cents/

It's considered unintentional PSD - Post Strike Damage

 

Thanks

 

I thought they stopped punching the mintmark by hand in 1990. Maybe I'm wrong, and old age is just getting to me.

Chris

 

Maybe. Too early in the morning and coffee hasn't kicked in yet. But it is a plating issue IMHO

 

Definitely a year with rpm's. It does seem to be in the normal area of ddd though. It does not match any that are found on variety vista

 

Personally, I think they should change the name of the United States Mint to include "And Crappy Pennies, Too!"

Chris