As the Greek crisis deepens, its citizens and investors globally are turning to hedges old and new.

European demand for the age-old safe haven of gold coins has risen in recent weeks, as has demand for the relatively new concept of investments in digital bitcoins, market participants say. The price of both have risen in recent weeks as concerns have grown about the threat to banks in Greece and the risk that turmoil could spread to other countries in the eurozone and elsewhere.

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