Second century B.C. fill with early 13th c. A.D. fill in mouth.
The Byzantine objects from the mouth are P 13713-P 13718, L 3585.
Lower fill contained bones of many infants and dogs.
The bones from this ... Mid-2nd c. B.C.
The East Chamber of a double cistern lying between the northeast corner of the Theseion and the Annex to the Stoa of Zeus Eleftherios. ... Both chambers went out of use as water containers simultaneously ... Ca. 200 B.C.
May be of Hellenistic origin when cistern system went out of use.
For a general note on the cistern see Nb. ΟΕ III, pp. 246 ff.
Objects from B 586 various depths (no subdivision): S 2324-S 2330,
P 34894, ... Late 2nd-early 6th c. A.D.