Chemical Composition: ICP-MS/AAA data from sample, Leaded Bronze:
Cu, 73.24; Sn, 5.46; Pb, 20.65; Zn, 0.01; Fe, 0.06; Ni, 0.04; Ag, 0.07; Sb, 0.07; As, 0.3; Bi, 0.09; Co, 0.01; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Technical Observations: The patina is mottled olive green and brown with areas of light greenish white. The neck, back, and right wing of the figure have been distorted by a blow, which resulted in a large dent on the back of the figure and the loss of a large piece of metal from the top and right side of the bird’s head. There is also a crack in the metal on the right side of the head. A smaller bit has chipped off the left shoulder. Since the figure’s excavation, much of the surface has been smoothed to remove corrosion accretions, leaving visible chatter marks and fine parallel scrapes. The right side of the bird is more pitted by corrosion than the rest of the figure. Burial accretions cover the underside of the base and parts of the figure (e.g., the feet). Earthen material, which may be core material, fills the tail of the figure. The burial accretions, corrosion material, and perhaps core material conceal the cast’s inner surface, making it difficult to judge how the bronze was made. A layer of cast-in metal—probably a repair—covers the inside of the belly. Fragmentary remains of fabric that are presumably from the mummified bird survive on the inside of the piece.
The hollow figure (c. 0.2 cm thickness in head) is cast in one piece with a tongue shaped (3.59 x 3.2 cm) opening on the underside of the belly and behind the legs. This would have been sealed with a separately fashioned copper-alloy plate, which is missing. Without further evidence, it is not possible to say how the patch would have been fastened to the opening. A rectangular base (c. 0.9 cm high) was cast integrally to the claws of the figure. It preserves a tang on the underside, which would have served to fasten the piece to a larger mount. Remains of a sprue that may also have served as a tang are visible on the end of the tail.
The features were drawn or engraved in the surface and inlayed, perhaps with silver wires. Remains of a black inlay material of mineralized silver sulfide fill most of the grooves. The bird’s convex pupils are delineated by an engraved circle.
Francesca G. Bewer (submitted 2001)