I Was coin roll hunting a bank box of pennies and found this error when magnifying. I checked this at every angle and against other 1985 D pennies. This is original and I can't find any other example of it online. I think I found a unique coin here.
@jay, could be a small die chip on the top of the letter T (and if so then there should be a bunch of them out there) or else it might be a tiny hole in the copper plating letting a small area of the underlying zinc core start to deteriorate (in which case you might have the only one, but it isn't an error).
"If you climb a good tree, you get a push." -----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz
You guys are great thank you so much for the replies. I've been collecting for years but I do not have the experience and identifying or labeling the types of abnormalities I find on coins. Thank you again.