Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Point 1 (top): Cu, 90; Sn, 8.77; Pb, 0.32; Zn, 0.056; Fe, 0.1; Ni, 0.05; Ag, 0.05; Sb, 0.21; As, 0.4; Bi, less than 0.025; Co, 0.044; Au, less than 0.01; Cd, less than 0.001
Point 2 (pin): Cu, 94.85; Sn, 3.89; Pb, 0.48; Zn, 0.018; Fe, 0.23; Ni, 0.04; Ag, 0.1; Sb, 0.09; As, 0.23; Bi, 0.062; Co, 0.02; Au, less than 0.01; Cd, less than 0.001
Point 3 (middle): Cu, 90.84; Sn, 7.68; Pb, 0.6; Zn, 0.034; Fe, 0.26; Ni, 0.04; Ag, 0.11; Sb, 0.28; As, 0.14; Bi, less than 0.025; Co, 0.026; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: Pin shaft
XRF data from Tracer
Alloy: Bronze
Alloying Elements: copper, tin
Other Elements: lead, iron, silver, antimony
Comments: The presence of calcium, barium, chromium, lead, zinc, and strontium represent pigment on the surface of the object.
Pin head
XRF data from Tracer
Alloy: Bronze
Alloying Elements: copper, tin
Other Elements: lead, iron, silver, antimony
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 include punching, such as the chevron lines in 2004.196. The soft fluid shapes of 164.1972 probably indicate direct work on the wax model.
Henry Lie (submitted 2011)