The London/Zurich Good Delivery List

To facilitate trading among members, a list of acceptable Melters and Assayers is maintained by the Market. This is known as The London/Zurich Good Delivery List.

To qualify as "good delivery" metal must conform to the following specifications.

Platinum

Form
Plate or Ingot
Weight
The maximum weight permitted is 6 kilograms (192.904 troy ounces). The minimum weight permitted is 1 kilogram (32.151 troy ounces).
Purity
At least 99.95% Platinum
Markings
Each plate or ingot must bear:
The producer’s recognised mark.
The letters PT or PLATINUM with a stamp indicating the purity.
An individual number or mark.
Year of manufacture
The weight in grams, kilograms or troy ounces (if in grams to one decimal place, if in kilograms to four decimal places and if in troy ounces to three decimal places).
Appearance
Smooth, free from cavities and easy to handle.

Palladium

Form
Plate or Ingot
Weight
The maximum weight permitted is 6 kilograms (192.904 troy ounces). The minimum weight permitted is 1 kilogram (32.151 troy ounces).
Purity
At least 99.95% Palladium.
Markings
Each plate or ingot must bear:
The producer’s recognised mark.
The letters PD or PALLADIUM with a stamp indicating the purity.
An individual number or mark.
Year of manufacture.
The weight in grams, kilograms or troy ounces (if in grams to one decimal place, if in kilograms to four decimal places, or if in troy ounces to three decimal places).
Appearance
Smooth, free from cavities and easy to handle.