I had to remove the anti-glare coating on my LCD (using plastic polisher) because the previous owner probably used ammoniac based cleaner on it. After removing it with Novus plastic polisher, I found these micro-scratches / wear on the LCD. Tried to polish it as well, but no dice. I couldn't feel it with my nail.
Question is, have you seen similar scratches and what could have caused this? Steel wool? Screen burn caused by a buffer?
Just being curious here, because I've put a plastic anti-glare and it hides the scratches very well.