Appears to be use filling from 3rd c. A.D., pre-Herulian into 4th c. or later. Lined with tiles. Coins:
6 May 1937 #1-#2 (disintegrated) ... Early 3rd-early 6th c.
Complete circle of base and fragments of side, and two-thirds of rim preserved, the rim not joining the wall and base fragment.
Low ring foot; a sharp moulded ridge around the wall just above the foot; ... 11 May 1937