The fill in this cistern is Byzantine with considerable admixture of Greek IV-III c. B.C. Coins:
7 March 1932 #9
9 March 1932 #1
10 March 1932 #1-#2
11 March 1932 #2
12 March 1932 #1 ... 11th-12th c. A.D.
Cistern-system west of the Stoa of Zeus. Two chambers connected by a tunnel, each with two fills. Lower fill in south chamber contemporary with upper fill in north chamber, at the end of the 4th c. B.C ... Ca. 375-160 B.C.