Very cool error . But I don't think it started by the arrow , since it has issues all over struck through grease is very plausible . @Jim M .
You are absolutely correct. As dies get abraded and reused, the fields get abraded away since they are the highest point on the die. As they abrade away, the fields get "raised" on the coin which is what causes these open area. This is not uncommon for the Washington Quarters nor the Kennedy's nor the Eisenhower Dollars.
So you're saying this is like the '37 3 legged Buffalo and polishing caused the weak areas ? Though I always thought the high areas would disappear 1st .
What is going on wit the lower ear on the lincoln? As for the quarter there is die abrasion but the mark pointed out is PMD as you can see moved raised metal. (Cited from: https://www.cointalk.com/threads/what-happen-to-george.269956/)
I really never paid much attention to the ear . Not really sure, maybe the grinder busted loose on the guy .
The high areas on the coin are the DEEPEST depressions in the die. As the surface of the die is polished away the shallowest depressions in the die are lost first and those areas represent the lowest relief areas on the coin.