The 15 Ozt MK BarZ “Big Bass” LTD to 500. 999 Fine Silver Bar is a limited edition collectible item made of silver with a fineness of 999. Produced in the United States in 2019, this bar features a unique design with a total precious metal content of 15 ounces. As a valuable addition to any bullion or silver investment collection, this bar is a rare and sought-after piece for collectors and investors alike.