1994 D Mintmark error

Hello. Wanted to reach out and see if anyone has seen this on a Mintmark? Or on a 94 LC.
What process would create this?

 

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It looks to be just a plating blister. No error.

 

It’s solid material. If you look at edges of circle they are raised.

 

Yes because that is a plating blister. And yes they are raised.

 

Plating blister is very definable

ok. Thank you for your response.

 

Any other opinions.

 

Lol are you telling me what it is? when you're asking about it? I'm just telling you. all zinc cents will have plating blisters. Tell me what you think is is?

 

@paddyman98
Check it out

 

Yes I agree. I know what plating blister is. I have tons of zincolns with plating blister. Thank you for your response as I said. It’s appreciated. I can get other opinions as well. Strength in numbers. Wisdom of the crowd.

 

And just to reiterate. I never tried saying what it was. So not sure what your reading. I put in here for opinions. You gave yours and it’s appreciated greatly.

 

You're telling me it wasn't what I said it was. That's what I'm referring too. How do you know it's not that when you don't know? I'm just trying to help you out. Let others chime in.

 

Thanks for your reply.

 

Hi
Imho, Looks like a plating blister.
Common on the zincolns.

copper-plated zinc cents from 1982 to the present. Blisters form during the strike when expanding gas pushes up the copper plating from heat and pressure.
There is no other explanation for this occurrence. Plating blisters can have different effects on the coin such as a bubbles or streak. It’s still a plating issue.

 

How do you know if it is solid or not? Have you tried sticking it with a toothpick to see if it moves?

Chris

 

Yes I did. If you look at the lower serif as well you will see a break moving west. The d is punch into as there is a clear separation line.
I was first thinking a cud then it got punched. I don’t know ‍♂️. I appreciate everyone’s insight though.

 

Very common for zincolns to have the MintMark explode and eat itself

 

If you notice on the numbers, you'll see more Machine Doubling if that is what you are referring to.

But it's not ONE but TWO problems. MD and Plating Blister on the Mint Mark.

FYI, there are no RPMs since now the dies contain the Mint Marks since about 1989.

Also, a CUD or Die Chip would not "raise" a mint mark. The area would be filled in.

 

The bottom of mm looks like it was subject to split plating. The zinc underneath has started to corrode and expanded causing the raised area. It is the same as when rust forms in a small scratch on your car fender and eventually causes the paint to blister. Sorry, but PMD

 

Everyone on here is awesome. From the first opinion to the last. Thank you all for taking a look at it and the knowledge from ALL is greatly appreciated.

 

FYI - It could not have been a cud, anyway, since a cud is a break on the rim that extends into the field. This, clearly, does not involve the rim.

Chris