Located in front of the main gate of the Great Mosque.

One epigraphic emblem above the entrance. The reading is difficult.
Glory to our Lord, the sultan al-Malik al-Nāṣir Ḥasan b. Muḥammad
(According to Nina Jidejian in Tripoli through the ages, 1980, p. 80)
Possible dating: between 755/1354 and 762/1361
Close-up of the emblem: