Two coins, one Fatimid and one Byzantine? [решено]

Hi all

I have purchased two more coins for my collection

This coin is a Fatimid era coin but I am unsure what the ruler and mint could be:





The other coin is an Anonymous Byzantine Follis depicting Christ which was struck in Constantinope, does anyone know which ruler it might be attributed to?:

I had posted this in the wrong forum by accident, thanks to the moderators for moving it