Can someone tell me if this is genuine? William II of Sicily l

Kingdom of Sicily (Norman).
William II (1166-1189).
AE follaro, struck at Messina.
Typical weight of around 2 grams.
Medieval European Coinage vol. 14 p646 #432-436 plate 24.

obv. Lion head facing.
rev. Kufic script.
الملك
غليالم
الثاني
(King William the second)

see:
https://www.acsearch.info/search.html?term=William+II+sicily+lion+kufic&category=1-2&en=1&de=1&fr=1&it=1&es=1&images=1&order=0&currency=usd&company=

Цитата: "numisquare"​Kingdom of Sicily (Norman).
​William II (1166-1189).
​AE follaro, struck at Messina.
​Typical weight of around 2 grams.
​Medieval European Coinage vol. 14 p646 #432-436 plate 24.
​
​obv. Lion head facing.
​rev. Kufic script.
​الملك
​غليالم
​الثاني
​(King William the second)
​
​see:
​https://www.acsearch.info/search.html?term=William+II+sicily+lion+kufic&category=1-2&en=1&de=1&fr=1&it=1&es=1&images=1&order=0¤cy=usd&company=

​thanks, but is it authentic ?

Using only what you provided as a guide, it appears to be authentic.