Scientists have cracked the code to a 440-year-old castle from a sunken ship Among the Spanish coins an ancient mechanism was found off the coast of Wales. For almost 20 years, treasure hunter Peter Hughes tried to find the combination by hand, but only experts from Cardiff University were able to do so. Using micro-computed tomography, they looked inside the lock without damaging it and calculated the four-letter code -. ANCE. It is believed that the object locked a box of valuables on a ship that sank in 1583. Regnum is now faster in MAX.