Qustantiniyah (Constantinople) mint. Tughra, mint and date formula including ‘azza nasruhu “may his victory be glorified” below; Reverse, sultan al-birrayn wa khaqan al-bahrayn al-sultan bin al-sultan “sultan of the two lands and khaqan of the two seas, the sultan, son of the sultan”. The “two lands” allude to Asia and Europe, separated at Constantinople by the Bosporus. The “two seas” are the Black Sea and the Mediterranean.