I'm not a coin collector, but I found an interesting quarter today in my change. I always look at my coins to see if they are worth saving for my son. While looking at a 2003 d illinios state quarter i noticed the "R" in quarter on the heads side is almost not visiable. The rest of the quarter is perfect without any flaws. It looks like an error in the stamping of the coin. Can anyone tell me if this coin is worth more than face value?