Your quarter is just showing circulation contact marks.......that's what I assume you are talking about. I don't see anything on either side that says 'error'.....
Do you see that ring going around the Reverse of your Quarter? That is damage from a coin wrapping machine when it crimped the roll.
Off Topic I had to laugh the other day when another person questioned your veracity and wanted to know how long you had been collecting errors. It was a good thing I wasn't drinking anything because it would have been all over my keyboard. Chris