France Scott 653 Die?

A low value stamp, but I noticed a slight difference between these two. The left could be overinked, but the "Cortot" at the bottom appears much larger than the one on the right. In addition, the very top line in the forehead is continuous in the left stamp, and appears to be shorter / incomplete in the right stamp. (I included a closeup to try to make my point.) Is there a different die, or just the case of over and under-inking?

The different die are differentiated by the hair on the right of the Marianne. Here seems same die.

There is also a third stamp rouletted.

I suppose here this is inking differences. A lot of theses stamps have varieties of inking. Some have no facial values, no "F", etc for over-inking.