Based on unpublished material from Istros (Romania), this communication will put the importation of Akanthian stamped amphorae in Istros during 5th and 4th centuries in a broader geographical context. Following the hypothesis of Yvon Garlan about the meaning of the Akanthian stamping system, I will explore the question of the circulation of these amphorae along the Western Black sea in relation with their volume indicated by the stamps during the 4th century.