Persian chess pieces

Two Persian chess pieces made of bone, circa 11th century A.D.
http://www.crumiller.com/chess/chess_pages/medieval/AncientPersianChessPieces.htm 


Two square ivory Persian chess pieces, circa 1100 A.D. 
Note the markings to indicate which pieces they were,
although today we do not know which is which.
http://www.crumiller.com



This Persian chess piece,
circa 11th - 13th century A.D., is made of bone.
http://www.crumiller.com