1989 D Lincoln Cent Offset Mint Mark

Ok thanks for your expert observation.

But the answer to your next question is:
?Why are the devices on the date smaller and the mintmark is smaller on one coin??
The question is hidden between these two lines between the question marks. The answer: (To view the question, highlight the blank area)
Because the die was over polished to remove some die deformity. Where a clash mark, die damage like Feeder Finger Damage, die gouges or what ever. When they are over polished, the fields are reduced. What does that mean? The fields are the outside of the dies. The bust/designs are deep into the die. The devices are about mid depth into the die. When the dies are polished, the fields are reduced. The devices (Letters/numbers) are tapered. Wide at the base of the devices, narrow at the tops of the devices:

Note on the above image, the fields that are polished, removes the width of the devices. So on this die, when the fields were reduced, now for the rest of that dies life, all coins devices will be weaker in strength. That is what you have. A coin from a die that the fields were over polished so much that the date and mintmark was weakened.