CIIIR2:  Roman Weight

Commercial geometric weight of Italian origin, 300 B.C. to 2nd century A.D. Polished black basalt weight of a truncated sphere form; measures 135 mm x 92 mm x 93 mm. Marked with "X" in dots. Identified by Kisch. Reference: Kisch. Scales and Weights, page 92; illustrated Fig. 44, p. 94. Skinner. Weights and Measures, pp. 63-66.