1988 Lincoln Penny - D Mint Mark Missing Top Serif - Anyone Seen This Before?

@silviosi What do you mean by change the dealer? I found this coin today out of a coin roll and I was just categorizing it for adding to my collection.
The serif is there a little bit, but it's definitely not normal, at least to my eyes, and the top bar looks pretty thin. Just curious what caused it.

@silviosi That's totally fine. No apology needed. I was just confused what you meant.

Dorado for more accurate knowledge I suggest to change the site.

Or might have been a dab of grease.



too the CCF!

Not a grease struck through issue. Why? Struck Through Grease makes the devices wider looking. But it is weak. Note the date? Not how much smaller the '19' is on this coin? The mintmark was also altered by die polishing, reducing the size of the devices. How does this happen? During polishing it reduces the fields, removing eventually the base width of the devices. , thus they are not as deep now on the dies. Thus on the coins, these polished areas will make the devices narrowed/shorter than normal. With that area affected, I'm thinking they were removing clash marks on the obverse. So what do we need to remember?
Grease Fill makes the devices wider as it fills the tops of the devices:

Die polishing makes devices smaller by affecting the bases of the devices:


CoopHome: Why are some devices looking wider and some looking smaller? wider/taller is from grease prevention of the tops of the devices being block by grease. smaller devices is from the fields being polished off the die, removing the wider parts of the devices and leaving the tops. making the devices smaller in size.