Most of circle of low ring base preserved. At center of floor, inside circular groove, a foot stamp:
Buff clay. Good red glaze.
Underneath, a rough graffito:
Western Sigillata.
Cf. Iliffe I (1936), ... 21 April 1937
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.