Standards of the Sultanate of Aleppo - 1100 AD

I am currently working on a Field of Glory campaign set in Northern Syria during the time right at the end of the 1st Crusade.  For control markers, I am working with 1" diameter wooden medallions I picked up at Hobby Lobby and plan on painting the symbol of the controlling faction.  With that said, does anyone have any idea as to any symbols or standards that Ridwan of Aleppo's troops would have used or carried at this time?

Any help would be greatly appreciated.