HALLMARKS

Just by touching or looking at a metal it isn’t possible to be certain of the metal purity. For this reason the 1973 Hallmarking Act makes selling precious metals over a certain weight unlawful without the item being hallmarked.

Gold and palladium pieces which weigh more than 1 gram and Platinum pieces which weigh more than 0.5 grams must be hallmarked by law.

You can see the hallmark stamp for each metal below