Need help identifying Silver Islamic Coin #2

[kimo]

I purchased this ancient coin as Silver Islamic Coin

weight 1.5 g
Diameter 12.5 mm

I need your help identifying it
what Dynasty?
What ruler?
what era and year?
what is written on it?
Is it real silver?

any information will be helpful

Thanks

[aws22]

Dear Kimo, your coin:
Mamluk, Burji dynasty, al-Ashraf Sayf al-Din Aynal, AR Fractional Dirham, mint? (AH 857-865/1453-1461 AD)
Reverse (Left photo):
Inner circle; center: اينال , Aynal
Margin:
السلطان الملك الاشرف ابو النصر   , al-Sultan al-Malik al-Ashraf abu al-Nasr
Obverse (Right photo):
ضرب ....  , darb ....
لا اله الا  , La Ilah Illa
 الله محمد, Allah Muhammad
رسول الله  , Rasul Allah
al-Malik al-Ashraf Sayf al-Din Abu al-Nasr Aynal ( الأشرف سيف الدين إينال), better known as Sayf al-Din Aynal, was the 13th Burji Mamluk Sultan of Egypt, ruling between 1453–1461.

Maythem