Causes of marks on coins

I see a lot of collectors and dealers dismissing the marks on coins as obviously one coins hitting another or a staple scratch when in many cases it is hard to see how that would have happened. A couple examples, on this Bust dime does it look like a deliberate or accidental mark.
On this Peace dollar what would have been the likely cause of the marks on the obverse?
0
Comments
I always figured pockets caused lots of damage.
Nuts, bolts, jack knives, ammo.
Now get on and off the tractor 100 times and havoc is wreaked on your future collectible.
"If I say something in the woods and my wife isn't there to hear it.....am I still wrong?"
My Washington Quarter Registry set...in progress
The unforgivable ones are those scratches that cross from different directions. X-marks are not okay. Two different actions, not one accidental.
A single staple scratch on a scarce old coin is often written off.
Lance.
For Peace dollars, the unlucky coins at the bottom of the bin (or bag) got hit by all the rest as they trickled in. Bags of coins were moved from place to place, stacked, and tossed around. It's a miracle any of them survived in decent shape.
The causes of marks on coins are as multiple as coins themselves.....Cheers, RickO
I have no idea on the Peace dollar, doesn't look like other coins to me.
Is that a dime in the OP?
Proportions look quarter-ish.
Counting machines damaged some coins.
And there is plenty of in mint damage; it wasn't like they were trying to create works of art with their business strikes.