Chemical compositions of eight western Han coins (Wuzhu coins) and eight Chinese coins of later periods (one authentic and seven imitative) were analyzed by means of neutron activation analysis and atomic absorption analysis. The chemical compositions of the eight Wuzhu coins were found to be similar to each other and quite different from those of Tang dynasty and later periods. The average contents of copper, lead, and tin were 81.5 + 1.8%, 13.2 + 1.2%, and 2.6 + 0.7%, respectively. The imitative coins were variable in chemical compositions which were mostly out of the range of Chinese coins. The authentic Chinese coin, Wan-li Tong-bao (1573), was found to be brass and is one of the earliest examples of the use of zinc in Chinese coins. For other coin analyses, see AATA 16-888, 16-889, 16-1726, 17-881, and 20-2173.