Zuz (coin)
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A Zuz (pl. zuzzim) was an ancient Hebrew silver coin struck during the Bar Kochba revolt. They were overstruck on Roman Imperial denarii or Roman provincial drachmas of Vespasian, Titus, Domitian, Trajan and Hadrian. Four Zuz, denarii or drachmas make a Shekel, a Sela or a Tetradrachm.
Its name is probably a corruption of the Greek Zeus which was the deity portrayed on the reverse of every drachm and tetradrachm (four drachma) of the Seleucid period.
In the Talmud, the Zuz and the dinar are used interchangingly. The difference being that the Zuz originally refered to the Greek Drachma which was a quarter of the Greek Tetradrachm weighing approximately 17 grams; while the Dinar refered to the later Roman Denarii which was a quarter of the Tyrian Shekels and had the same weight as the Jewish Shekels and the Roman provincial Tetradrachms at approximately 14 grams.
The Zuz is mentioned in the Passover Haggadah in the Passover song Chad gadya, chad gadya (One little goat, one little goat); in which the lyric of dizvan abba bitrei zuzei (Which Father bought for two zuzim (half shekel) ) repeats at the end of every stanza.

