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A balance-scale mark recognised across the Vienna Convention countries.
Also known as: CCM, Convention hallmark, Scales mark on jewellery
A pair of scales over a number in a shape indicating the metal. Struck under the Vienna Convention so that a hallmark applied in one member state is legally recognised in the others — an international mutual-recognition mark rather than a national one.
A mark showing a balance scale superimposed on the fineness number, within an outline shape indicating the metal, applied by assay offices of states party to the Vienna Convention on the Control of the Fineness of Precious Metals.
Contexts: Jewellery
Legally recognised across member states, so an article marked in one need not be re-assayed to be sold in another — the mark exists for mutual recognition rather than to describe the metal differently.
Struck alongside the national marks rather than instead of them, so a UK article bearing it will carry both.
United Kingdom
A small balance scale with two pans hanging from a horizontal beam, with a fineness number across it, inside a shaped outline.
Both record fineness; the convention mark does so in an internationally recognised form.