Good Delivery

Good Delivery gold bar weighing 12.4 kilograms (400 ozt)
Good Delivery silver bar weighing 31.1 kilograms (1,000 ozt)

The Good Delivery specification is a set of rules issued by the London Bullion Market Association (LBMA) describing the physical characteristics of gold and silver bars used in settlement in the wholesale London bullion market. It also puts forth requirements for listing on the LBMA Good Delivery List of approved refineries.

Good Delivery bars are notable for their large size and high purity. They are known for their distinctive trapezoidal prism, a product of the mould which helps create a uniform production and consistent sloped faces, referred to as a draft or undercut.