Serial numbers may hold the key if euro falls apart

United public front could be nothing more than an illusion. Investor/speculators, in an effort to remain objective, must consider all options.

But the speculation has led to wild rumours, denied by the Greek government, that Greece is already secretly printing drachma and equally uncorroborated reports that some shopkeepers in Germany are rejecting euros issued in Greece.

But in the event of a country falling or being pushed out of the club it will not be long before Europe's shopkeepers and consumers start looking rather more closely at their banknotes.

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