The Kingsby London 100 g Gold Bar contains 100 g of 999.9 gold. The bar is certified by the Assay Office London, the first independent assayer established under an act of parliament in 1478. It is protected and preserved in high level security packaging which guarantees the origin of the sealed ingot. Each ingot case is printed with a unique serial number matching the number imprinted in the bullion bar to act as a certificate.
For that extra peace of mind, each case bears a security mark which can be easily authenticated by downloading the Certieye app on your smartphone.