This lot features two 1981 U. S. Assay Office San Francisco coins minted from U.S. Strategic Stockpile Silver; .999 fine silver and one troy ounce of 31.1 grams. Design features an eagle and a U. S. Flag. The U.S. Assay Office produced 1 Troy ounce silver rounds, specifically during the period when the Defense Logistics Agency released silver from its stockpile.