ALMOHAD: Abu Muhammad 'Abd al-Mu'min, 1130-1163, AV ½ dinar (2.27g), "S", ND (ca. 525), A-478, the mint mark "S" is for the city of Sabta (Ceuta), and is written below both the obverse & reverse field, between the two surrounding squares, VF.
Estimate: 275-325 USD