Stone seals from the Indus Valley have been found as far afield as ... I've got in front of me an elephant, an ox, a kind of cross between a cow and a unicorn and, in my hand my favourite, a ...

Stone seals from the Indus Valley have been found as far afield as ... I've got in front of me an elephant, an ox, a kind of cross between a cow and a unicorn and, in my hand my favourite, a ...