LONDON BULLION MARKET ASSOCIATION home site map

London Bullion Market Association

Specifications For Good Delivery Bars

Good Delivery Gold

minimum gold content: 350 troy ounces (approximately 10.9 kilograms)
maximum gold content: 430 troy ounces (approximately 13.4 kilograms)

Recommended dimensions (approximately):
Top Surface	255 × 81 mm
Bottom Surface	236 × 57 mm
Thickness	37 mm

The physical settlement of a loco London gold trade is a bar conforming to these specifications.

The gross weight of a bar should be expressed in troy ounces, in multiples of 0.025, rounded down to the nearest 0.025 of a troy ounce.

Fineness: the minimum acceptable fineness is 995.0 parts per thousand fine gold.

Marks

Serial number
Assay stamp of refiner
Fineness (to four significant figures)
Year of manufacture (expressed in four digits)

Good Delivery Silver Bar

minimum silver content: 750 troy ounces (approximately 23 kilograms)
maximum silver content: 1100 troy ounces (approximately 34 kilograms)
minimum fineness: 999.0 parts per thousand silver

Recommended dimensions
	Minimum	Maximum
Length	250mm	350mm
Width	110mm	150mm
Height	60mm	100mm

The physical settlement of a loco London silver trade is a bar conforming to these specifications:

The gross weight of a bar should be expressed in troy ounces in multiples of 0.10, rounded down to the nearest 0.10 of a troy ounce.

Marks

Serial number
Assay stamp of refiner
Fineness, expressed to either three or four significant figures
Year of manufacture (expressed in four digits)
Optionally, the weight, which, if included, may be shown in either troy ounces or kilograms

Site Map