Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Cu, 94.7; Sn, 5.08; Pb, less than 0.025; Zn, 0.002; Fe, 0.06; Ni, 0.01; Ag, 0.01; Sb, 0.04; As, 0.11; Bi, less than 0.025; Co, less than 0.005; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Technical Observations: The patina is green with spots of brown burial accretions. Underlying dark red corrosion products are visible under the green. The surface is rough in many areas, but fairly well preserved in others. A 7-cm chip loss reveals deep, possibly complete, mineralization in this area and serves as evidence of long-term burial.
The tapered arms were probably hammered from a thicker cast bar-shape. The spirals would then have been cold worked into the two ends. The process would have involved multiple annealings to maintain malleability.
Henry Lie (submitted 2012)