On COIN C, I'v circled the design high points.
The top of the forehead is the first place to look on a
Memorial cent. It's just like the cheek/jaw on a
Wheat cent for showing wear.
The mint lowered the shoulder relief, but the very bottom of the shoulder and bust are design high points still. Ever notice how the STATES OF on many Memorials are weak, it's due to the high relief of that obverse area. After that I examine the hair, cheek and lapel for rubs to determine if a Memorial is AU.
For the reverse of a Memorial I've highlighted the design high points. Always inspect these for wear.

