Gold and gold receivables held by euro zone central banks remained unchanged at 363.25 billion euros in the week ending Aug. 12, the European Central Bank said on Tuesday.

Net foreign exchange reserves in the Eurosystem of central banks fell by 0.3 billion euros to 177.5 billion euros, the ECB said in its regular weekly consolidated financial statement.

The size of the balance sheet of the Eurosystem of central banks rose by 69 billion euros to 2.073 trillion, the 17-country bloc's central bank said.

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(Editing by John Stonestreet)