Chemical Composition: ICP-MS/AAA data from sample, Leaded Bronze:
Point 1 (handle): Cu, 76.66; Sn, 6.72; Pb, 16.23; Zn, 0.004; Fe, 0.01; Ni, 0.04; Ag, 0.05; Sb, 0.08; As, 0.15; Bi, 0.029; Co, 0.025; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Technical Observations: The exposed surface is bare metal with some areas of a thin brown patina, such as on the interior of the rim of the strainer, and a few isolated patches of green corrosion products. The surface does not appear to have been stripped. The thin metal is very well preserved; some deformations and stress cracking is evident. There is nothing ancient evident about this strainer.
The bowl was formed by hammering sheet metal into shape. Circular lines were inscribed on the interior of the bowl as guides for the punched holes. Lines were also inscribed in the center of the exterior to make a polygonal shape prior to punching the holes. The holes seem to have been punched first from the interior out, then from the exterior in, and then bored out to remove most of the excess metal within the holes. Further finishing of the edges of the holes was done on the exterior, which shows flattened metal around the holes as well as tool marks around some of the holes.
Carol Snow and Nina Vinogradskaya (submitted 2002)