Today I'm returning the 2015 high relief $100 gold coin to the mint. Although I really like the design, I just can't get past the die polishing scratches that show on the surface of the coin. I have never seen such die polishing marks on a modern US coin. The fact that this is supposed to be a collector coin makes the poor quality extremely inexcusable. I don't want to just return it and leave it at that. I actually want to send a letter (probably certified) to Richard Peterson who is the U.S. Mind Deputy Director for Manufacturing and Quality. I have searched the internet, but can't find the mailing address to his office. Does anyone know what it is?