A transitional form showing this basic outline but also a blockier rim and no interior ledge can be designated Hayes 90B/105 or Bonifay2004 Sigillée type 47 variante B1/type 57 variante A (end 6th-beginning 7th c.)
Bibliography
Bonifay2004, pp. 164, 166, 176, 177, figs. 89, 94 (Sigillée types 33 and 47)
Broad, shallow dish with high, vertical to splayed foot, stepped floor, wide flaring wall, and heavy knobbed rim. Two subtypes: one with lower interior ledge showing grooves and rouletting, in a finer fabric (A; cf. Hayes 89); and one with higher interior ledge, undecorated, in a coarser fabric (B). Sometimes molding, grooving, and rouletting on outer face of foot. Uncommon ARS form from mid-5th to early 7th century.