This is one of the earliest representations of Scythians on a Greek vase--the neck frieze of an Attic volute krater (570 -560 BCE) showing the Calydonian boar hunt.
One crouching archer, ready to shoot his bow, appears in the middle of the left-hand side, and there are two more on the right. The archers are identified by name, and wear the pointed hat typical of Scythians, but not the decorated "body-suit" which is standard for Scythians on other vases.
Link here to Florence 4209 on Perseus.

This fragment of an Attic Black-Figured Amphora of 540 BCE shows an archer and grazing horse. The representation of the archer has all the features which are typical of Scythians on vase paintings in this period: pointed hat (cut off), pointed beard ("goat-tee"), "body-suit" decorated with a variety of patterns, gorytos (a combination of a quiver and a bow-case), bow, and bare feet.
Link here to Philadelphia MS 4873 on Perseus.