1995 D Washington Quarter W/Flat Bust On Obverse

That is PMD
The face appears to have been ground down either intentionally or unintentionally.
Sometimes you may never know what caused the damage to a coin unless you were there so you
may get different opinions on what members think actually happened to a coin but damage is damage.
This could not have happened during the striking of the coin which is the only time an error can occur.

I'm guessing a Dremel tool and intentional defacing. Also guessing that the hit on the "n" and on the "1" are where the tool slipped.

A person wanting to find an okapi needs to know what an okapi is before being successful.

Same with coin error hunting. :)
Save Yourself time, effort, and disappointment...don't learn the coin hobby backwards.

Looking for random anomalies on coins and hoping they match up to something collectable will take you a lot more time, wasted effort, and disappointment repeatedly finding out you have nothing but post mint damage or useless Machine Doubling, Die Deterioration, etc.

Spend some initial time at places like error-ref.com, doubleddie.com, varietyvista.com, conecaonline.org, coppercoins.com etc. to find what actual and collectable coin errors look like.

A good way to start is, for instance, separate a bunch of pennies by date. Go to varietyvista.com and, date by date, use the reference there to see what errors are known for that specific coin/mint mark. Look for those specific errors/varieties using the pictures provided. After doing this for awhile you will KNOW what an actual error looks like and not have to waste time on face value and damaged coins. :)