"Helmeted" Countermark issue. Imitating countermarked drachms of Parthian king Phraates IV.

Diademed and draped bust left; behind, eagle left, holding wreath; on neck, circular "countermark" of helmeted king right / Archer (Arsakes I) seated right on throne, holding bow. 20mm, 2.76 grams. Mint in Margiana or Sogdiana. Senior 199.2D; Sellwood 91.13; Shore 473; Sunrise 494.