Chemical Composition: ICP-MS/AAA data from sample, Leaded Bronze:
Cu, 75.63; Sn, 3.62; Pb, 20.48; Zn, 0.04; Fe, 0.02; Ni, 0.03; Ag, 0.07; Sb, 0.11; As, less than 0.10; 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 blackish green. The object is intact but with casting flaws. The key was made by lost-wax casting.
Carol Snow (submitted 2002)