Hesperia, XVIII, 1949, p. 338, no. 112 Well Dump Type 21 C; Curved Rims; Long Wide Nozzles Type 21 C Prime; Curved Rims; Long Wide Nozzles; Unglazed Type 21 A; Curved Rims; Plain Bottoms Type 21 B; Curved Rims; Raised Bases
4th quarter of 5th B.C. 4th quarter of 5th B.C.-well into early years of 4th B.C.