1989 lmc black lines affects both sides

[Igotitbad]

04BCCE8D-B4FF-41BD-A1E8-28AED105DD9A.jpeg I found a Lincoln cent with thick black lines that get larger going from left to right on the reverse. The obverse is also affected by these lines. I am curious if anybody can help me identify what happened and what I’m looking at . Thank you kindly

[Petespockets55]

Are these "lines" you are referring to parallel to the rim and in the middle of IN GOD WE TRUST and USA?
If so, those are referred to as a "ridge ring" and are usually the result of die deterioration.

Some lines on coins can be described as straight and parallel to each other (roller lines), concentric to the center (lather lines), or even radiating from the center (like die flow lines).

[Igotitbad]

I thought it could be die detioration but the way it disconnects completely has me confused thank you

[Petespockets55]

I thought it could be die detioration but the way it disconnects completely has me confused thank you

In your most recent images, the short black lines above the letters are the oxidized zinc showing through where the copper plating has split, which is referred to as "Split plating" issues.

(In my first reply I was trying to get clarification on which lines you were asking about. The "ridge ring" I mentioned is going through the middle of the letters in an arc and is a type of die deterioration.)

[Igotitbad]

Thank you kindly I have never seen that before I was wrong with my guess I did think it was some kind of die deterioration I thought the dd was on the reverse though I jjust had never seen anything quite like it thank you so much for your help !!

[Petespockets55]

Like most every member here, I'm glad to help.