Do You Know This man?

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Do you know this man? Mr X is Greek, he comes from the north, Halkidiki region. He is 66 and used to be a customs officer, but now he runs a small export business, trading in antiques and antiquities. He runs this business with his two brothers "a daughter-in-law and another relative", and has suppliers all over northern and central Greece. He is well known and well-travelled, feeling equally at home in London, Switzerland and Germany as well as Bulgaria. Does your local coin dealer know him? Ask, I bet every single one of them will deny having ever met or done business with him. But this coin, this coin could be from their stock, couldn't it? If it were, would your local dealer be able to tell you exactly whose hands it had been through on its way to his stockroom? Can he show you that he has actually tried to determine this in the case of those items he decides to stock?

Vignette: Arrest (reconstruction), coin from a recent seizure, as seen in Poligiros police station (AFP)