24 carat gold bars certified by the Swiss company Heraeus SA comply with the London Good Delivery (LBMA) standard. The authenticity of the bar is declared on the top of the bar and contains the logo of the supplier and the refinery, a unique number, purity and weight. The back of the bar is clean with no inscriptions except for the Multicard, Goldseed, Roundbar, Kinebar and Round-Kinebar bars, which contain the refinery logo. Bars up to 100g are sealed in a protective plastic bag. A certificate is attached to the bars weighing 250g, 500g and 1000g, containing a number corresponding to the production number of the bar.