What is the specification of a standard London bullion bar?
This is fixed by the London Bullion Markets Association. The specification comes from the LBMA website. (a) Weight: minimum gold content: 350 fine ounces (approximately 10.9 kilograms) maximum gold content:430 fine ounces (approximately 13.4 kilograms) The gross weight of a bar should be expressed in ounces troy, in multiples of 0.025, rounded down to the nearest 0.025 of an ounce troy (see LBMA paper on “Weighing, Packing and Delivery Procedures for Gold and Silver Bars” at Annex D). (b)Fineness: the minimum acceptable fineness is 995 parts per thousand fine gold. (c) Marks: Serial number Assay stamp of Acceptable Refiner Fineness Year of manufacture (expressed in four digits) Marks should be stamped on the larger surface (normally the cast surface at the top of the mould) of the two main surfaces of the bar. (d) Appearance: bars should be of good appearance, free from surface cavities and other irregularities, layering and excessive shrinkage. They must be easy to handle and convenie
