Gold Bar – Argor Heraeus – 999.9 Fine in Sealed Assay Card (OR 1 of similar style) 1 OUNCE PURE GOLD Argor Heraeus SA. Is a leading international refinery of precious metals and is accredited by the London Bullion Market Association (LBMA). This makes Argor Heraeus a safe and reliable way to include bullion in your investment portfolio. The obverse of the Argor Heraeus Gold bar bears the AH logo with the weight and purity and is engraved with an individualized serial number. The reverse is plain. The one ounce bar is 999.9 fine and comes to you in assay card. This is the exact bar you will receive.