Phaistos Disc is a mystery printed in clay

Phaistos Disc has 45 unique signs.

The disc is a fired clay object from Crete, Greece.

Italian archaeologist Luigi Pernier discovered the disc in 1908.

The disc was found in an underground temple depository's basement.

The disc measures about 16 centimeters in diameter.

Signs were stamped onto soft clay before firing the disc.

The disc's text spirals clockwise from outside to inside.

There are 61 'words' grouped by radial lines on the disc.

The disc's clay may not come from Crete locally.

Dating varies between 1850 and 1400 BC in the Bronze Age.

Some signs show concrete objects like plants, birds, or boats.

The disc inspired many undeciphered attempts at reading it.

The disc proofed early printing but the idea did not spread.

The Phaistos Disc remains on display in Heraklion Museum today.

The disc shows 242 impressions of these 45 different signs.