999 Fine Gold Bar in Assay. Minted bars represent a convenient way to store physical gold affordable for customers looking for any degree of investment level. Every single ingot delivered by IGR is furnished with the company’s own assay and certified security- sealed packets. These ingots are available in fully guaranteed tamper proof packs, thereby representing the high level of purity and excellence, along with the superior quality standards that IGR stands by. 8.62 x 15.33 x 0.40 mm. Serial numbered assay certificate package.