An unidentified male body was found on Somerton Beach
in Adelaide, Australia in 1948 wearing a sweater and coat despite the hot
day, carrying no identification. There were no clues as to his identity and
dental records and fingerprints matched no living person. An autopsy
discovered bizarre congestion, blood in the stomach and enlarged organs but
no foreign substances.
A suitcase found at the train station that may have
belonged to the man contained a pair of trousers with a secret hidden
pocket, which held a piece of paper torn from a book imprinted with the
words “Taman Shud”. The paper was matched to a very rare copy of Omar
Khayyam’s ‘The Rubaiyat’ that was found in the backseat of an unlocked
vehicle and on the back of the book was scrawled five lines of capital
letters that seem to be a code. To this day, the entire case remains one of
Australia’s most bizarre mysteries.
From of the Guardian - "Top 10 uncracked codes"