Its weight in fine gold must be between 350 ounces (10.8862 kg) and 430 ounces (13.3744 kg). Its fineness must be 995/1000 at the minimum. Every bar must be hallmarked with: the foundry mark, the Assay Office number, the Assay Office standard and hallmark. The Assay Office slip is not compulsory. The buyer can check the bars fineness and weight.