AR Half-Dirham 20mm, 2.96g, Akko/Acre mint AH 623/1226 CE
Album 837 (Album states that these are rare with readable dates, you can easily read "23" at 5 and 7 o'clock on the obv. of the inscription of the Hijri year "623")
Balog 644
O: around "[duriba b'Halab] sana thalat 'ishrin [wa sitta ma'ah]. Inner: al-Malik/az-Zahir Ghazi/ibn yusuf bin/
Ayyub"
R: around Shahada. Inner: al-Imam/an-Nasir Ahmad/al-Malik al-'Adil/Abu Bakr
Ex: Francis J. Rath (NY) October 1970