"Still there should be lots of gold coins" inside the ship Ertugrul, said Tufan Turanli, who heads the underwater archaeological team. The gold coin, dated 1856, measures 2.2 cm in diameter and weighs 8 grams. Both coins was retrieved at a depth of 12 meters. The team, which launched a three-year survey in 2008, has already discovered about 5,800 items from the wreck.
Source: Search.japantimes.co.jp, Wikipedia.