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.
Construction filling of the Poros Building west of the Areopagus. Patch of stony fill beneath the courtyard. Accumulation of the second quarter of the 5th c., deposited in the last quarter ... Ca. 475-450 B.C. and later