Malik:Your fig is not Ischia Black.
If you know it was so good tasting,then it is a very good variety.
If you found it better than Longue D'Aout,Noire de Caromb,Violette de Sollies,then ,you should look to compare your fig to Preto, Black Madeira,and Italian 258,which your ripe fruit also resemble,.
As for Black Ischia looking at your tree,it has nothing similar to Ischia Black.
Leaves are different,leaf stem (need to be pink),is different,and above all,the eye on the green fruit is bright red on Ischia Black,and a little redness extend on the skin close to the eye area.