1960-D Lincoln Cent DD Or MD ?

The die was normal when it was made. The 1960 small date dies were deemed not a good design and had a replacement hub for the 1960 coins to replace the poor design of the small date with a large date die. During the process the making the dies for Denver, they were in a hurry putting the mint mark punches on these die, thus that year has a huge number of RPMs. But on your coin the die was showing chips on the die (showing it was breaking down) when your coin was struck. So it is not a variety, but a breakdown of the die. Not a doubled die, as the die was a normal die when it was started to be used.

I could give a simple yes or no answer, but I feel collectors need the story behind the issue as well. So I added that for those who were unaware this was an issue that year.