Sadr-ı âzam

Illustration 053 from:

Costumes Orientaux
Recueil de costumes et vêtements de l'Empire ottoman au 18e siècle
Collection of costumes and clothing of the Ottoman Empire in the 18th century
Owned by Joseph Gabriel Monnier

Vézir Azem : grand vizir
grand vizier

Compare:

04 Grand [vizir] ou vice-roi
Great vizier or viceroy
in: Dessins originaux de costumes turcs, BnF 4-OD-23