Not only Portugal's holdings, but:
Dutch war gold.
The SNB has gold?
By Roel Janssen, writer of Guilty Gold. Nearly half of the gold looted by the Nazis from the Dutch central bank during the Second World War remains to this day in Switzerland, a reminder of the Alpine nation’s controversial role as a financial conduit for Hitler’s regime. About 61,000kg of Dutch war gold, currently value at about €2bn, is believed to be still in Swiss vaults.