Bar Highlights: Ships in individual assay card. Quantities of 25 typically ship in sealed boxes. Contains 1 Gram, or .0321 oz, of .9999 pure gold. CertiCard security. Eligible for use in Precious Metal IRA accounts. Australias Outback has been a major source of gold in the global precious metal markets since the discovery of the metal in the region in the mid-19th century. The Perth Mint is well-known for its high quality gold bars, offering assay cards for brand-new bars to guarantee the products weight and purity, with a serial number to authenticate your purchase.