Terrace wall of "Simons' House" and the Agora Boundary Stone (I 5510) in foreground. At left, a section of the original street at the base of the polygonal wall. At right, the West Branch of the Great ... I 5510 catalogued as Ζ but reference in the book ΜΣ. west 1099 Horizontal (normal) ... 28 Apr 1953