Rim Filed?

With is the difference of a Rim Ding and a Filed Rim? and does it affect the price? I have seen coins with dents in the rim but no sign of smoothed or moved metal labeled as Filed, is it the same thing in PCGS's eyes?
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Lafayette Grading Set
I've always thought a filed rim was undesirable because it was a sign the coin had "sweating," or removing, of precious metals off the coin.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
<< <i>What is the easiest way to tell if a coin has been rimmed? >>
Check the rims with a good magnifier under good lighting and look for disturbance to the metal on the rim surfaces usually in the form of scrape marks or burnishing. Actually, a fine stone is used more often than a jewelers file. You can experiment with some pocket change to see what it looks like. Most collectors will miss it because they are too busy looking at Ms Liberty's cheek and the fields for marks and hairline scratches.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
Rim filing is a practice that coin doctors use to hide the injury. It involves filing off the excess metal in the area of rim bump. In the old days it resulted in a body bag because it is an alteration that is used to hide a problem. Today it would result in a “genuine” holder.
The best way to spot rim filing is to look at the edge of the coin all the way around. A very skillful coin doctor can file the rim so that the area is smooth, and unless you look closely you will miss the spot. It will be a smooth area that is lower than the rest of the dentiles, rim ridge or whatever the edge design of the coin is.
Years ago I spotted a very attractive Classic Head $5 gold that looked to be in Choice Mint State that was raw at a show. The piece was very deceiving, but when I looked at the rim carefully, I found a spot where a rim bump had been filed. That met that the coin could not be graded by PCGS or NGC. This goes along with the saying, “Scarce raw coins are usually raw for a reason.”
<< <i>A "filed rim" is a type of repair that involves filing the rim in an effort to hide evidence if a rim nick or other rim damage. >>
Or it was a historical practice of shaving metal off the edge of a coin.