Hi all, I am new here, I have just came across some gold coins. One is a sovereign George V, 1911, one a half sovereign George V. 1914, and one half sovereign Queen Victoria 1899. My question is how do you tell where they were minted. I have seen various ones for sale with the place of mint detailed, are there marks on them depicting this, if so where do I find them?Hope someone can help. Regards, Ian.