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The siglos was a silver coin used in ancient Persia. It was equal to 1/20 of a gold daric and weighed approximately 5.6 grams. The Achaemenid dynasty, likely under Darius I, introduced coinage to Persia, with the daric in gold and the siglos in silver. Twenty sigloi (shekels) were equivalent to one daric, which weighed 8.4 grams. The coins featured an image of the Persian king holding a bow and spear on one side, and an incused pattern on the reverse. These coins remained in circulation without alteration until the empire's collapse. The word "siglos" is of Semitic origin, related to the Hebrew word "shekel".12

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