Small fragments of rim missing.
Concave underside. Contiguous ribs with scraped groove at top.
Low upper body. Boss in center of floor. Shiny black glaze, mottled to brown on one side, stacking circle; ... 325-300 ... Agora XII, no. 692, p. 285, fig. 7, pl. 28 ... Kopcke 1964, p. 81 ... Young 1951b, no. 8:2, p. 124, pl. 52:b