Tughra in Mustafa III name.

A tughra (Ottoman Turkish: طغرا‎ tuğrâ) is a calligraphic monogram, seal or signature of a sultan that was affixed to all official documents and correspondence. It was also carved on his seal and stamped on the coins minted during his reign. Tughras served a purpose similar to the cartouche in ancient Egypt or the Royal Cypher of British monarchs, every Ottoman sultan had his own individual tughra.

Legend "Struck in Egypt" and the accession year in Hejira (AH1171) below. "A" of Ali Bey on the top left side.

In 1768, Ali Bey deposed the Ottoman governor Rakım Mehmed Pasha and assumed the post of acting governor. He stopped the annual tribute to the Sublime Porte and in an unprecedented usurpation of the Ottoman Sultan's privileges had his name struck on local coins in 1769 (alongside the sultan's emblem), effectively declaring Egypt's independence from Ottoman rule. In 1770 he gained control of the Hijaz and a year later temporarily occupied Syria, thereby reconstituting the Mamluk state that had disappeared in 1517. However, a few days after a major victory over Governor Uthman Pasha al-Kurji by the allied forces of Zahir al-Umar and Ali Bey's forces on 6 June 1771, Abu al-Dhahab, the commander of his troops in Syria, refused to continue the fight after an Ottoman agent stirred up mistrust between him and Ali Bey, and hastily returned to Egypt. As a result, Ali Bey lost power in 1772. The following year, he was killed in Cairo.