The standard (
physical settlement) for
London gold trade is a
bar conforming to the following specifications:
(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
(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 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 convenient to stack.