1982-P 50C Are these chin wrinkles normal? (large pictures)

rlawsha

Here are some photos of a 1982-P Kennedy half. The chin strikes me as a little unusual. what is the cause of the wrinkled chin? Worn dies? I have a roll of these and they all look very similar.

nwcs

Looks like die fatigue to me.

Russellp23

Dies get tired