No gold or platinum listed. Only a piedfort sterling silver. I'm working out of Southhalls second edition. I think our friend has a third edition. I doubt if there is additional information on this one, however.
Virenium Definition: A patented silver-coloured base metal alloy in the Nickel Silver family, often used for commemorative coins and medals. Composed largely of copper, with nickel, zinc and other constituents. Intended to have the look and stability of precious metal.
Virenium is a German Silver type of alloy containing nickel as well as copper and zinc with a magnetic element as a built in security device. It was first used by the Isle of Man. It has the composition 81% Cu, 10% Zn and 9% Ni.