1998 D is this improper alloy mix

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Looks to be a rough plating issue.

 

Couldn't be an improperly mixed alloy as mid 1982 they went to zinc coated metal for cents. Could be roller marks but I can't tell much from the photos. Maybe other, more experienced members can comment. @JCro57, @Fred Weinberg, @paddyman98, others.

 

Not an improper alloy mix. This is a zinc planchet coated with a very thin layer of copper.

 

Since mid-1982, cents are made from zinc blanks plated with 100% copper. Since it is 100% copper, there is no such thing as an improper alloy. That being said, the plating process, subsequent striking and people "messing" around with them produce some odd looking coins.

 

Roller marks. IMO

I'm driving.

 

Thats what I get for assuming. I assumed that the improper alloy mix had to do with the newer zinc mix and not the copper ones ...blonde moment

 

Now you’ve got me laughing.

 

Since I'm not blonde, I have to claim "senior moment"

 

You’re making me laugh as well.

 

environmentally damaged coin with linear plating blisters...

 

Damage.

 

The copper plating has been stripped off the coin.

 

Also known as a cup holder coin since many can get this color from sitting in a cup holder in a car.

 

Are they worth extra money? I got a real deep cup holder, it will hold a lot.