SIlver siglo from Persia (the Achaemenid Empire) showing on the obverse an archer clad in the Persian "candys", kneeling right on one knee, at his back a quiver, in his right a spear, and in his outstretched left a strung bow and on the reverse an incuse square.

Silver siglo from the Persian Kingdom (modern day Iran) showing on the obverse a king running with a lance and on the reverse an incuse square.