Why is the LiB missing on the obverse?

Your answer please?
A. Weakness from the
Cud on the reverse?
B.
Grease Fill on the die.
C. Circulation wear on the coin.
D. None of the above?
Hidden answer below: Highlight the area in the next line:
Answers B and C are correct. The grease prevented some devices to be thinned, and the circulation wear wore off what was there. But note all devices are not affected evenly? Answers in the blank area between these two lines. High light that space to see the answer.
Edited by coop
10/21/2021 2:03 pm