1972 D Half Dollar Die Gouge, Die Deterioration, Or Both?

Looks like most of the Feeder Finger Damage was polished off. Some still remaining. But this may be be a case of not as deep scraping into the die. On the obverse, the bridge of the nose also looks like it was polished off some. So I feel this was a resurrection of an altered die by FFD.

We see this on other denominations that have the similar Feeder Finger Damage on them:
Quarters:

The damage to the die will leave marks like this:

After they are polished, they look like the examples on the first images.

Cents:



This can be light damage to the die or strong. Depends on how affected the FFD was on the dies:




The wheat cents had a different direction than the Memorial and Shield cents. More of a vertical direction on the coins.






The design on Nickels is a bit different on some years:





Dimes have a different direction:




Leaving flat look on the reverse area:


More of a Horizontal affect. On the direction they will be at the same angles as the same danominations.

Halves:




The larger the die, the less of an area the polishing will affect.

Dollars:

Heavy polishing to remove the FFD could affect this much of the die and the coins might look like this:


I used to think that die clashes were the what affected the dies the most, but now, I see the damage that the dies take from the FFD. That is the cause of the strongest polishing. There are other events that happen to affect the dies, like the polishing off of die dents from contact from other dies.






So when we see reduction on the fields, that is how the die polishing makes even devices/design change.
But we see the FFD more often. On some of the images, they were from the past, but some of the newer images will show dates of when the information was new/updated with the different years on the badges. Seems like more new stuff is being updated as we realize the directions are noticed. But that is what I base the information on my reasoning. This is just a thorough update on all denominations. Sorry to be long, but I like to train the eyes to get used to how/why doe polishing happens.

CoopHome: What is Feeder Finger Damage? How does it affect the coins affected by the polishing process?[/b]