This lot of 6 Engelhard 1 oz. 999 fine silver bullion bars. Each bar contains 1 oz of silver and is in the shape of a bar. They are of undated year of production and are manufactured in the United States. The brand/mint responsible for producing these bars is Engelhard. These silver bars are ideal for investment purposes due to their high precious metal content and government backing. BARS AND SERIAL NUMBERS 1.