"Dual Die"...two different Obverse dies used on the same coin?
I see a little shift on the date, but it looks a bit flat to me (md?). I'm not a modern Lincoln cent guy...don't go by me.
Definitely doesn't look like a doubled die. What you have shown shows mostly shelf doubling. Here's a true doubled die.
Notice the split serifs.
guess everyone else but you two are wrong.
Now that clear pictures have been shown, I can see it is a doubled die.
I guess I was looking at the machine doubling on the opposite side.