I am new to hunting for errors, and I came across this.
I was going through a few bank rolls of 1989-d pennies and this one stood out. compared to others with out loop the d was barely visible and under the loop looks very different.

I added this regular picture I got off a google to the right to show the difference. all though to the eye the d is barely visible and looks only like the inside part.
what would this be considered if anything?
