Add Eternity Coins to Favorites. Walking Liberty Half Dollars. Indian Gold Quarter Eagles. Up for sale here is an excellent 1799 Brazil Gold Maria I 6400 Reis Coin that has been professionally certified and judged to be in AU53 Condition by the NGC Grading Service – Choice Almost Uncirculated. Quite a remarkable Classic Gold Coin. As always, this piece is Guaranteed Genuine! About Us: Quality customer service is a top priority at Eternity Coins. Hundreds of satisfied customers. With rare classic gold and silver coins for their collections. We have been continuously recognized as an. For consistently providing excellent service and achieving the highest ratings from buyers of our coins. We take special care in the packing of each coin and also include free tracking with every order to ensure that your coins are delivered safely. All coins offered by Eternity Coins are. Coin grading is subjective and all posted grades provide professional opinions. We post multiple large, clear photos of each and every coin so that you can take a look at these gorgeous pieces yourself. If you have any questions, feel free to let us know. What Our Customers Say. Received Coin with No Surprises. Quality of Coin Exactly & Better Than Expected. This is a person I intend to do business with in the future.