The discovery of sunken gold conjures up visions of instant riches: Swiss bank accounts and lazy afternoons on faraway beaches, daiquiris in hand. But the quest to salvage the S.S. Central America — which went down in 1857 in a hurricane off South Carolina carrying 425 souls, as well as thousands of coins, bars and nuggets of California gold — has produced a quarter-century of broken dreams and legal nightmares. Story continues at http://www.nytimes.com/2014/05/05/us/x-still-marks-sunken-s