Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Cu, 87.34; Sn, 11.74; Pb, 0.48; Zn, 0.004; Fe, 0.05; Ni, 0.07; Ag, 0.1; Sb, 0.03; As, 0.19; Bi, less than 0.025; Co, less than 0.005; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: EMP analysis from sample, Bronze:
Cu, 85.90; Sn, 11.82; Pb, 0.25; Zn, 0.08; Fe, 0.02; Ni, 0.05; Ag, 0.09; Sb, 0.02; As, 0.08
T. Richardson, June 1999
Technical Observations: There is red and dark green patina throughout. Minor casting flaws are visible on the duck, and there are cracks along and across the shaft.
The duck-headed pins are lost-wax casts; casting flaws are visible in some areas. On 167.1972, a raised seam surrounds the duck’s body. The seam is uneven and not always straight, suggesting that it is not the result of casting the bronze in a two-part mold, but that the wax model was mold-made. The linear decoration on the shafts was incised in the wax model.
Tracy Richardson (submitted 1999)