The Authorized Version understood the word adarkonim (1 Chr. 29:7; Ezra 8:27), and the similar word darkomnim (Ezra 2:69; Neh. 7:70), as equivalent to the Greek silver coin the drachma. But the Revised Version rightly regards it as the Greek dareikos, a Persian gold coin (the daric) of the value of about 1 pound, 2s., which was first struck by Darius, the son of Hystaspes, and was current in Western Asia long after the fall of the Persian empire. (See Daric.)
Easton's Bible Dictionary. M.G. Easton. 1897.