Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Cu, 89.2; Sn, 10.11; Pb, 0.06; Zn, less than 0.002; Fe, 0.04; Ni, 0.05; Ag, 0.01; Sb, less than 0.05; As, 0.48; Bi, less than 0.025; Co, 0.048; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: XRF data from Tracer
Alloy: Bronze
Alloying Elements: copper, tin
Other Elements: lead, iron, nickel?, silver, arsenic
K. Eremin, January 2014
Chemical Composition: EMP analysis from sample, Bronze:
Cu, 88.43; Sn, 9.91; Pb, 0.03; Zn, 0.00; Fe, 0.03; Ni, 0.04; Ag, 0.01; Sb, 0.03; As, 0.44
T. Richardson, June 1999
Technical Observations: The patina is dark green with spots of blue, and the object was lost-wax cast. Casting flaws are visible in the head and neck. There are tool marks on the duck’s head, probably as a result of filing the cast bronze.
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)