--ECB total gold assets unchanged at 128.512 bln euros July 13 Frankfurt, July 17 (BridgeNews) - Foreign currency assets registered by the European system of Central Banks reached 273.9 billion euros on July 13, up 300 million euros from July 6, the ECB said Tuesday in its weekly financial statement. In addition, total gold assets were unchanged on the week at 128.512 billion euros on July 13, the ECB said.