The recently published 4th century BCE Aramaic letters on leather found in an unknown place in modern Afghanistan, usually are regarded to be satrapal letters sent by a certain Akhvamazda. As such, they can be compared with the Aramaic letters written on leather sent by Arsames, the satrap of Egypt (end 5th century BCE). In my paper I will examine some of the material aspects of the Akhvamazda letters and compare these with the Arsames letters which were written more than half a century earlier. I will specifically address the question whether the Akhvamazda letters are drafts or finalized documents.