2014-P 5 oz Silver ATB Great Sand Dunes NGC SP70 Early Releases. Up for your consideration is a 2014-P 5 oz Silver ATB (America The Beautiful) Great Sand Dunes Coin graded by NGC SP70 Early Releases. This is the Specimen coin that came in the black box and not the bullion version that came in the mint tubes. This is a very nice problem free coin. He has contributed to numerous reference books within the industry, as well as being a co-author of The Comprehensive Catalog and History of Confederate Bonds, 2. Edition with Douglas B. He is an authorized submitter to NGC, PCGS, and PMG, a diamond founding member of Coin Dealers Helping Coin Dealers and a supporter of the Industry Council for Tangible Assets. American Coins and Collectibles can be found at many of the state and local coin shows. American Coins & Collectibles.