Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Cu, 93.64; Sn, 4.26; Pb, 0.33; Zn, 0.003; Fe, 0.18; Ni, 0.28; Ag, 0.05; Sb, 0.05; As, 1.21; Bi, less than 0.025; Co, 0.015; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: XRF data from Tracer
Alloy: Arsenical Bronze
Alloying Elements: copper, tin, arsenic
Other Elements: lead, iron, nickel, silver
K. Eremin, January 2014
Technical Observations: The patina of these pins (164.1972, 1969.190, 1992.256.69, 1992.256.120, and 2004.196) is green with areas of dark green and red. Some burial accretions are present. The decorative top and the rod shape of the pins were probably cast using an indirect lost-wax technique. It is likely that the tapering point of each pin was refined by hammering. Finer details in the decorative tops may also have included cold-work punching, such as the chevron lines in 2004.196. The soft fluid shapes of 164.1972 probably indicate direct work in the wax model.
Henry Lie (submitted 2011)