2013-P GREAT BASIN ATB AMERICA BEAUTIFUL 5 OZ. SILVER NGC SP70 ER EARLY RELEASES. Hover any image to see it full size. 2013-P GREAT BASIN NGC GRADED SP70. 2013-P AMERICA THE BEAUTIFUL (ATB) GREAT BASIN National Park 5 OZ. Silver COIN certified by NGC as SP70 Early Releases (Certification # 3788890-047). The coin contains approximately. 5 ounces of Silver.