Minted bars are available in seven different sizes: 1 g, 5 g, 10 g, 20 g, 1 oz, 50 g, 100 g. Like all Heraeus gold bars the 1 g minted bar carries a serial number. The purity is 999.9. All minted bars come in the blister packaging also containing the certificate. The blisters are made of PET. Each is about the size of a credit card, 85 mm x 54 mm.