May I say, a COA means absolutely nothing in most cases. I mean it's simply a certificate that's states whatever. I could make COA's and say whatever I want. I could make one that says this coins solid gold and its 1 of 10 ever made. Unless the COA came from the US Mint it means nothing to anyone that knows better. And I can assure you this wasn't Plated at the mint. I'm not trying to sound rude. I just say this to make you think when your buying. Beautiful coin and I'm watching/bidding. But COA doesn't matter;)