We need better, higher resolution photos to provide a more detailed breakdown of what's what with this quarter. A neutral white balance would show the coin's true(r) color.
That said, I'm seeing evidence of light circulation all around, as suggested by the softening of the coins high point features/details. Not seeing luster. Coin would serve well as a hole filler until a better example comes along.
Google '1969 D Washington quarter
' and look at images to compare with your coin.