Pit in SW corner of Heliaia Peristyle (mint).
The four Athenian imperial coins (Κ-1641 - Κ-1644) belong to the Athenian Imperial Group III, a series that can be very closely dated to the middle of the ... Mid 3rd c. A.D.
Exploration in the peristyle of the Heliaea (1960); evidence for rebuilding in the third quarter of the 4th c. B.C. with some disturbance as late as 1st-2nd c. A.D. Date of reconstruction ca. 325 B.C ... Ca. 350- 325 B.C.